They were Soviet missions, not Russian missions. The Soviet Union is not the same thing as Russia, countless non-Russian scientists and engineers worked on the Soviet space program and labelling it all as "Russian" is a bit disrespectful of them.
@@razvanmazilu6284present a source. Give names. Break down the percentage of Russians versus everyone else in the Soviet space program. Don't worry. You can't, and won't.
Venus is like the perfect description of hell. Heat that melts lead, rains sulfuric acid and an atospheric pressure equivalent to 3000ft below sea level. Venus also goes by the name Morningstar and the Latin name Lucis Ferre (Light Bringer) which is the name of Lucifer.
You could walk on Venus (figuratively) and keep the sun over your head indefinitely. My nerd joke is "Venus rotates backward, but it rotates so slowly that a day is longer than a year. So on Venus, tomorrow is really yesterday, but it won't happen until next year."
@robertfindley921 Hate to be the “wELl aCktUaLLY..” guy, but it doesn’t actually rotate backwards. It rotates in the same direction as earth.. only our rotational axis is only 23.5 degrees… whereas Venus is almost 180 degrees .. so it’s basically upside down.. giving the illusion that it rotates backwards. If you don’t believe me, try it out with a rubber ball or whatever, using an arrow drawn on or even your finger, it took me a few times to even wrap my head around doing that, but alas.. it’s true.
@@jayboy2kay7Venus prob got a wild story to tell with its strange rotation. Had to be something that clapped into it with a ferocious speed or size right?
I remember watching that 2012 Venus transit. I literally just made a pin hole in an aluminium foil and could see it clearly. It was amazing how it didn't require any fancy equipment.
I watched it as well. I did (still do) have and old, cheap 3" refractor scope that included a sun filter. I recall the excitement of having had this opportunity in my lifetime.
true, but was just a theory, they are all theories truth is we have no clue WHY anything venus, for me, its where did all the co2 come from if the planet is not geologically active, cant come from volcanism, and where did the heat that co2 is retaining come from? the mere 10% of solar that reaches the surface? sure with high co2 concen, but that would take billions of years, which means the co2 concentration levels have also been there billions of years, perhaps it all came from the volcanism from the beginning and with no co2 sink to absorb it like or ocean does, it had no where to go, im fairly certain co2 is a relatively inert gas
The real reason is convection. Taking a Planetary Astronomy course in college and the rotation of Earth is thought to induce rotation of the liquid metal inside the planet, creating our magnetic field. Since Venus rotates so slowly, it can’t induce convection in its interior and therefore doesn’t produce a magnetic field. I’ve never heard this thought of “no impact,” and you’re right he does contradict himself
It looks to be opposing theories. It is clear that we really don't know though if something hit it or not for either of these cases. Definitely a mistake to say as a fact "Venus has never been hit"
It is isn't the impact or lack of an impact, that created the magnetic dynamo (magnetic field). Earth had a healthy spin before its impact and continued to have one after the impact. That spin is what keeps the dynamo active. Venus, like Earth, had a healthy spin. But sometime in the past it too suffered a major impact. That impact flipped it up-side-down--giving it a retrograde spin. It also lost most of its angular momentum. Presumably the object carried it off. The rest was lost by the tidal battle with the sun. We don't view Venus as having a 3 degree tilt, we view it as having a 177.4 degree tilt (meaning its North Pole is upside down). Mars does not have a magnetic dynamo, because its density is too low, indicating it lacks the nickel-iron core. Its core is also too cold. But I like your content. Keep up the good work.
The motion of the molten core produces the magnetic field. Mars used to have a magnetic field and atmosphere but lost them when its core cooled and stopped moving.
I heard about this thing that youtube unsubscribes people from channels but until today when i realized im no longer subbed to Astrum wasnt sure if it was true. Subbed again pressed the bell, lets see what happens next...
Venus is like a tormented yet still close sibling to Earth, because they are so similar but Venus is such a hellish world, I see it like it’s been through hell whilst earth was lucky. This is because Venus had a stagnant lid instead of plate tectonics and there is evidence of water vapor in Venus’s atmosphere that is being removed slowly.
Thanks for the video Alex, I find Venus a fascinating place even though it is very hostile. With its phases it helped Galileo to disprove the geocentric model, what I think is quite a step forward in science research, besides being so similar to Earth in size and density but so different on anything else, makes me think on how many things have to go right for life to exist here on Earth and be rewarded at this moment in time with your voice and videos, it feels like a miracle.
What a truly magnificent UA-cam channel, which I have only just discovered! I cannot even begin to imagine the sheer amount of work that has gone into it - making such informative, educational videos about the wonders of the cosmos, its planets, time and space!
If memory serves, contrary to what is stated here, Venus is not the only planet in our solar system with retrograde rotation. Uranus rotates at around 98 degrees to its orbital plane, which means that although its rotation is approximately sideways, technically it is retrograde.
@@saladparfait No. You're wrong. 98 degrees declination (tilt) means the north pole has gone past sideways and is slightly pointed to the the direction where the south pole would normally be.
@@dphuntsmanno, simply no. The poles of Venus are not at any significant inclination despite being retrograde. The only possible comparison is that a collision might have caused it, but that’s highly speculative and certainly would be unrelated events.
Beyond the voice, the content is always top-notch. Each video feels thoughtful, well-paced, and keeps us coming back for more. It’s a rare talent to balance both narration and storytelling so seamlessly.
One of the later Venera craft had a microphone. It worked from just before landing but died in the conditions shortly after landing. The recording is out there on the net. It makes interesting listening.
it's like 30 Seconds long, and you hear 2 "Pops", and then barely hear the Wind. Not very interesting, and just shows the low quality of "Communist Made".
The fact that Venus is losing it's upper atmosphere to space makes me wonder how it's atmosphere's composition has changed over time, and if it would be possible to figure that out.
Photolysis - solar radiation splitting (in this case) water molecules in the atmosphere, and the hydrogen escaping to space - is believed to have made the planet bone dry (the remaining hydrogen is bound into the sulfuric acid clouds). The absence of water may also explain the absence of plate tectonics, letting heat build up inside the planet, maybe leading to the total resurfacing ~X00 million years ago.
This type of Data is enormously fascinating! Thank you for offering so much information to us, they Laymen of society. The data of each Planet is so fascinating to me that when I was a kid, deep into the more scientifically driven Sci-Fi world of Stark Trek, that I created entire star systems with planets and all of the basic data that we have for our other Planets in our Solar system. I wish I can kept the endless work I poured into creating these planets, their stars, whether singular, binary or otherwise, along with each exo-planet, and accompanying satellites
i would think a lack of tectonics would suggest there is no solid plates below the surface, with constant volcanic action and ectreme heat there would be no time for it to cool enough to form a proper solid crust, we have tectonic action because our cooled plates float on a moving molton rock bed but venus probaby doesnt have the same depth of solid surface meaning its constantly resurfacing like over boiled porridge
@@xaraxania The thing is, all the volcanos and lava flows on Venus are very old and there has been no indication of activity for millions of years. Venus isn't constantly resurfacing, but when it does it sure goes for it on a global scale. Probably like the Siberian and Deccan traps on steroids.
No water on Venus, which is crucial for active plate tectonics. Water, counterintuitively, lowers the melting point of rock as well as increasing its plasticity.
@@xaraxania A few billion years ago (when the Sun was significantly dimmer), Venus may have been cool enough to have surface water and plate tectonics (assuming a thinner crust at that time). Loss of surface water (through runaway greenhouse effect and photolysis) may have caused any tectonics that might have existed to grind to a halt.
6:30 As an astrophysics professor from the University of Calgary (Climate of Sophistry is his channel) aptly pointed out, the temperature on Venus has nothing to do with CO2, but is a direct consequence of the compression of the gas in the atmosphere. The phenomenon is called adiabatic auto-compression and is a main component in how astrophysicists determine the atmospheric temperature of planets. It is also noteworthy to point out that this very accurately predicts the atmospheric temperature of the earth, and also shows how all of the planets in the solar system warm and cool uniformly according to the output of the sun, and their relative processions through their respective Milankovitch cycles.
How is there so much pressure.........is it because of the heat...caused by the dioxide ,because the gravity on Venus is similar to earths so it cannot be under any greater grip......how does Venus keep so much pressure
The temperature on Venues is a sum of multiple factors. Main being the green house effect caused mainly by CO2. Followed by the pressure caused also by CO2 which is a (very) heavy gas that at the gravity Venus and Earth have accumulates at the bottom of the atmospheric "ocean" that covers them. This is the most serious problem with CO2 build up. Once it reaches a certain threshold it is impossible to reverse and the gas to disperse naturally. And with no CO2 absorbing elements (like Earth has) Venus is practically and irreversibly trapped in its current high temperature and pressure condition.
That sounds like climate science denial, so I googled that guy, and yeah, he's a climate science denier. If anyone here is curious, you can find a few blogs over the years debunking some of his media. It is weird that he seems to be an actual astrophysics researcher at Calgary, despite calling the greenhouse effect "Sophistry". Anyway, he's welcome to attempt to publish a paper on climate science, if he thinks his ideas hold up to peer review.
@@nirajpatel4148 hehehe you can calculate it. Wikipedia Atmosphere of Venus, reference 8 "how hot is Venus". You sound like "A witch! Burn a witch!" from Monty Python Holy Grail. He may be denier but physics for this is quite simple and you can see similar effect on Saturn and Jupiter. Besides, co2 radiative forcing is 'logarithmic' and Venus 98% co2 atmosphere without feedback loops cannot be compared to Earth. Most scientists in astrophysics know this and they explain that temperature on Venus is not directly caused by greenhouse effect but indirectly. Explanation is i.e. on PBS Space time.
@@nirajpatel4148 Name calling? Really? He shows the math and the basic physics. Climate "denial" is a religious term that has no business in legitimate scientific debate. Also knowing the evolutionary history of the theory of AGW is paramount. If you have no idea who the Milner Round table groups (members of whom set up the RIO climate conference and the Club of Rome) then you do not have the requisite information required to be informed on the subject. If you genuinely wish to pursue the truth of the matter, then looking into the historical vantage point I have presented is a prerequisite. Also, if you're using Google to research these topics given their proven search ranking tampering as proven by Dr. Epstein in his testimony to the US congress (someone who shares your view BTW), or the cesspool of miss and mal information known as Wikipedia, then I recommend re-thinking your approach to research - referencing an echo chamber is the antithesis of sober, rational, scientific rigor. In short, all you have to do is prove his logic and/or math wrong. No need for childish, cultish name calling. Let's be adults here please.
I would love it if you make more long form content like 30min+. They're great as sleeping material. I hope it doesn't sound wierd, but it's great. And lovely facts too
In a pristine dark sky, Venus at peak is so bright its light washes out stars around it, and it casts a hard, distinct shadow that you can clearly see with your eyes. It's remarkable.
If you told the Greeks that Venus looked beautiful on the outside but was actually a horrifying hellscape below the cloud layer I think they'd just agree that it was even _more_ representative of the love goddess
Something I love about Venus is that it had so much influence on humanity for so long that not until Humans finally got a look at the surface that people finally gave up that last shred of hope that they would see steaming swamps and some kind of alien version of a Land of the Lost under the clouds of Venus.
6:20 if Earth and Venus have same gravity, why doesn't Venus atmosphere expand, and lower its density to Earth air density? Or why doesn't Earth air compress to the same pressure as in Venus?
I really wish we had more probes dedicated to Venus. Gliders, balloons, drones, all at different altitudes of the atmosphere, and of course rovers to drive and drill. We’ve had 60 years of material science development since the first landers were launched. Isn’t it time we do some awesome engineering and go back??!
Honestly, Pluto would have been a more accurate name for venus since pluto in Roman mythology is the God of the Underworld. The dwarf planet pluto, on the other hand, should be named venus since it has a heart-shaped ice basin.
The lack of rotational velocty is probably the cause for no dynomo generated field in conjunction with perhaps a severe rarity of uranium or thorium to decay and keep the core sufficiently molten.
@@daniels7907We have no other examples to go off, we are the only habitable place in the universe we know about, and we don't know if it requires a large moon, or a nearby Jupiter sized planet, or both to make it work.
@@thesenate1844 - That's actually what calls attention to this for rocky planets. Mercury, very close to the Sun and subject to strong tidal forces on it's metallic core has a magnetic field. Venus, orbiting further from the Sun with slow rotation and lacking any moons does not have one. Mars, even further away and with just two tiny asteroids as "moons" also lacks one. There seems to be a need for some kind of dynamo causing some difference between the speed of rotation within a planet's different interior layers in order to produce such a field.
@@daniels7907 Io is a terrestrial body exposed to tremendous tidal forces, but it has no magnetic field. It has an iron core but no dynamo. Tidal forces may be a part of the puzzle, but doesn’t seem like the deciding factor.
@@michaellesak6912 - In Io's case any magnetic field would be almost impossible to measure (or sustain) given the plasma torus it creates inside of Jupiter's immensely powerful field, plus the electrical arc that extends all the way from io to Jupiter's poles. The energy that would normally be Io's field is being spread out because of its location and the effects its volcanism produce by spewing matter into the Jovian field.
0:33 The "acid-laced environment" isn't necessarily as bad as you might suppose. What you have is hydrogen sulfate. For that to be sulfuric acid, you need water. There is not much of that on Venus. (However, there is some-details on request.)
@@nataliealice05wrong. Many non-Russians were part of the Soviet Union and many of them worked on the Soviet space program. Calling all of them Russian is not only incorrect, it's a bit disrespectful.
I grew up in the 80s and have taken it for granted that Venus has the most aggressive conditions in the solar system. It's strange to think that previous generations knew very little about the planets. I guess the current generation will feel the same way about images of Pluto.
Correction: Venus's axial tilt is actually greater than 177°, it is almost perfectly upside down. The fact that Venus is upside down also accounts for it's retrograde rotation.
this is one of my favourite channels ever. Ive held a presentation on black holes at my university, inspired by some of your videos. I've also plucked your channel of course ;)
@@saladparfait The heat on Venus is caused by the atmospheric pressure and has nothing to do with CO2. Same as on earth but we have all been lied to about that.
Just in case you’re going to reference something from USSR in future videos. Please use USSR, not Russia, because USSR contained of 15 different republics (often it was equal to very different nations) ❤❤❤😊
I love your voice so much.... if the content of your vids weren't so interesting to listen to, I'd easily fall asleep to them... but alas, i alwsys end up listening to the very end ❤
Honestly I would refrain from using Soviet and Russian interchangeably. Venera was a Soviet space program, not a Russian one. While the Russians were a majority, countless scientists and engineers that worked on the Soviet space program were not Russians. The Soviet = Russian is a narrative that the Russians love, but is disrespectful of the other nations that were part of the USSR (many of them not by choice). I know this is not what your intent, but I felt the need to point this out.
Soviet is a historical term. Most contemporaries called the Soviet Union, Russia. It was made of the former Russian Empire, was majority ethnically Russian, and the upper echelons of the party were mostly Russian. Soviet should be used like Byzantine. Noting an Era. Moreover if I'm to wager, most of the Soviet Space resources went to Russia after collapse.
@@Darkfawfulx I grow up in the 70s and 80s. I used Soviet and Soviet Union. The news referred to that state as the Soviet Union. As did most USA government documents. But it was common to use Russia or Russian in conversation too. That was not true of Byzantine.
@flarvin8945 My point with Byzantium is that it is a term used by historians. Not the contemporary peoples. And yes I'm quite aware internally the Soviets called themselves such for multiple reasons. Externally is a different story.
@@Darkfawfulx internally? Do you think I lived in the Soviet Union in the 70s and 80s? I did not. I lived in Germany and USA during that time. And I am referring to USA news and USA government using Soviet and Soviet Union. In very day conversations, Russian and Soviet were interchangeable. As were Russia and Soviet Union. Where are you claiming no one used 'Soviet'? Because when I was growing up, it was used quite common.
Venus is just like women. Beautiful on the outside, but once you get to know her, deep underneath the cover, she shows the real deal. I am sure someone here knows what I am talking about :)
It really bothers me that you’re showing mercury and mars as the same size as earth and Venus. A lot of people don’t understand how much smaller they are and you’re reinforcing this.
The impact hit causing the moon hypothesis is very popular but not a known fact yet. Great video, just add a disclaimer for things that are the popular belief but not yet proven.
There’s a lot of evidence it did happen. Collisions were common in the early solar system. Jupiter wiped out the Super Earths after all, a very common type of world in the universe.
@@abloogywoogywoo hence why its popular There are also other potentially viable causes as well requiring no impact. It's not in the realm of fact yet and there are some problems with this as well, hence why I asked for a disclaimer. Your comment doesn't address this, simply having a lot of evidence for a hypothesis doesn't mean it happened.
@@dawienel1142 offer an alternative - however, you have no frame of reference since you can’t point to a host planet that has a satellite with such a large relative mass to the primary. Demoted to dwarf planet Pluto doesn’t count. Eventually as the Moon moves away, Earth becomes tidally locked to it, and the two become a double planet system. Again, no exosolar system examples. This is why I said there is a lot of evidence for the impact hypothesis.
I wonder if other planets in our solar system harbour simple or even microscopic life. If the Mariana trench here on Earth taught us one thing, it was that sometimes life exists in the most unexpected and inhospitable places. So sometimes I wonder what lurks under the atmospheres of Jupiter Saturn Neptune and Uranus.
I don't think I've ever gotten a reply on here before, and as a fellow content creator, I understand it's not always easy. However. I do have a question that I hope that you or someone else could find some time to answer. I always hear that Venus' acid rains evaporate before reaching the surface, but wouldn't the intense pressure allow it to retain its liquid form even at those high temperatures? Also there are unexplored "river" valleys all throughout Venus that scientists can't explain as lava flows since they are too long and intricate. Could these have been carved out by sulfuric acid river flows if my above theory is correct? Also the lack of a magnetic field seems obvious to me but maybe there's more to it. The rotation of the Earth as well as it's moon generate more friction and tidal forces respectively. Venus has the slowest rotation of any planet and it's the only planet that lacks moons besides Mercury. Certainly that would reduce is interior heat/dynamo? Thanks in advance.
Due to the higher surface (and underlying crustal) temperature, one could reasonably expect lava flows on Venus to travel somewhat farther from their sources, before solidifying. Recall from the video (and other sources) that nearly all of Venus' surface is covered by lava flows.
@@stuartparker-q3o To my knowledge, though, no active volcanism has been observed on Venus. In fact, Earth is more volcanically active. The Venusian service is covered in volcanoes and ancient lava lows (relatively young ones) but it's thought that these are for the most part, inactive or dormant and they were formed as a result of a one time event that essentially resurfaced the atmosphere and its planet. It's also believed that the Venusian core and mantle are smaller and cooler than Earth's. So basically something happened to trigger intense volcanism over a short amount of time. I think that maybe Venus once had a moon that eventually got too close and collided with the planet, triggering the intense volcanism and the subsequent CO2 and sulfur atmosphere. As well as the reversed rotation. Also I'd love some insight on the acid rain question I had in the original comment.
The Russian Venera missions are massively underrated by the US-biased mass media. It was an incredible achievement for human science.
Agree, they should send one more probe to the surface , with all the advancements could get some incredible footage
They were Soviet missions, not Russian missions. The Soviet Union is not the same thing as Russia, countless non-Russian scientists and engineers worked on the Soviet space program and labelling it all as "Russian" is a bit disrespectful of them.
@@razvanmazilu6284present a source. Give names. Break down the percentage of Russians versus everyone else in the Soviet space program. Don't worry. You can't, and won't.
Hahaha
And real unlike the moon landings.
Venus is like the perfect description of hell. Heat that melts lead, rains sulfuric acid and an atospheric pressure equivalent to 3000ft below sea level.
Venus also goes by the name Morningstar and the Latin name Lucis Ferre (Light Bringer) which is the name of Lucifer.
'Lucifer' *is* exactly the Latin name.
Love hurts 😂
And yet, there is life ❤
man... that is so ironically cool... meanwhile our planet is named "dirt"
*1 Kilometer
You could walk on Venus (figuratively) and keep the sun over your head indefinitely. My nerd joke is "Venus rotates backward, but it rotates so slowly that a day is longer than a year. So on Venus, tomorrow is really yesterday, but it won't happen until next year."
I know very interesting. I regale my friends with this anecdote too
If you told me that it would go over my head but now that I think about it makes sense
200 is less than 300.
@robertfindley921 Hate to be the “wELl aCktUaLLY..” guy, but it doesn’t actually rotate backwards. It rotates in the same direction as earth.. only our rotational axis is only 23.5 degrees… whereas Venus is almost 180 degrees .. so it’s basically upside down.. giving the illusion that it rotates backwards. If you don’t believe me, try it out with a rubber ball or whatever, using an arrow drawn on or even your finger, it took me a few times to even wrap my head around doing that, but alas.. it’s true.
@@jayboy2kay7Venus prob got a wild story to tell with its strange rotation. Had to be something that clapped into it with a ferocious speed or size right?
Realizing what the environment of Venus is like should tell us all just how precious life is.
naah bro we would just put covid mask on and be just fine on venus
Venus be like "welcome back to hydraulic press planet"
The thing is there's a legit possibility of life existing in its clouds
Venus prob had liquid water on its surface longer than Mars did as well per one of the leading theories
Why? The earth and life has survived far worse than humanity can do to it
You did forget that the venera program had microphones on them as well. So we do have audio of venus
smash
smash
Really wish we'd try making landers again.
pet
pet > smash
Those Venera missions astonished me when I learned of them a couple of years ago. What they accomplished is amazing.
Not just what they accomplished but the sheer persistence in achieving success.... so many failures before they finally got it.
Alex your voice is golden I would listen to you narrate videos all day long. Love your content so much
He has another channel with hour+ long videos to put us to sleep 😉
GLORIOUS VOICE you have, Mr Alex.
i jerk off to Alex's milky smooth voice every night
Glorious Alex you have, Mr Voice.
Alex voice is very soothing. It has a real calming effect. 😊
Always great content from astrum.
I remember watching that 2012 Venus transit. I literally just made a pin hole in an aluminium foil and could see it clearly. It was amazing how it didn't require any fancy equipment.
I watched it as well. I did (still do) have and old, cheap 3" refractor scope that included a sun filter. I recall the excitement of having had this opportunity in my lifetime.
The narration and the background music is always on point😊
(13:00) "But Venus never had such an impact" contradicts Venus rotates in different direction because an impact.
true, but was just a theory, they are all theories truth is we have no clue WHY anything venus, for me, its where did all the co2 come from if the planet is not geologically active, cant come from volcanism, and where did the heat that co2 is retaining come from? the mere 10% of solar that reaches the surface? sure with high co2 concen, but that would take billions of years, which means the co2 concentration levels have also been there billions of years, perhaps it all came from the volcanism from the beginning and with no co2 sink to absorb it like or ocean does, it had no where to go, im fairly certain co2 is a relatively inert gas
Was just thinking this myself.
Came to make the same comment. Beat me by 10 days...
The real reason is convection. Taking a Planetary Astronomy course in college and the rotation of Earth is thought to induce rotation of the liquid metal inside the planet, creating our magnetic field. Since Venus rotates so slowly, it can’t induce convection in its interior and therefore doesn’t produce a magnetic field. I’ve never heard this thought of “no impact,” and you’re right he does contradict himself
It looks to be opposing theories. It is clear that we really don't know though if something hit it or not for either of these cases.
Definitely a mistake to say as a fact "Venus has never been hit"
It is isn't the impact or lack of an impact, that created the magnetic dynamo (magnetic field). Earth had a healthy spin before its impact and continued to have one after the impact. That spin is what keeps the dynamo active. Venus, like Earth, had a healthy spin. But sometime in the past it too suffered a major impact. That impact flipped it up-side-down--giving it a retrograde spin. It also lost most of its angular momentum. Presumably the object carried it off. The rest was lost by the tidal battle with the sun. We don't view Venus as having a 3 degree tilt, we view it as having a 177.4 degree tilt (meaning its North Pole is upside down).
Mars does not have a magnetic dynamo, because its density is too low, indicating it lacks the nickel-iron core. Its core is also too cold. But I like your content. Keep up the good work.
There is no up or down in space. So 3° is correct.
Atmospheric drag is said to play a part as well.
@@HansvandeVen i guess theres a rule of right hand when describing the orientation of astral bodies
@@ozan1234561 Didn't know that. 👍
The motion of the molten core produces the magnetic field. Mars used to have a magnetic field and atmosphere but lost them when its core cooled and stopped moving.
I heard about this thing that youtube unsubscribes people from channels but until today when i realized im no longer subbed to Astrum wasnt sure if it was true. Subbed again pressed the bell, lets see what happens next...
Venus is like a tormented yet still close sibling to Earth, because they are so similar but Venus is such a hellish world, I see it like it’s been through hell whilst earth was lucky. This is because Venus had a stagnant lid instead of plate tectonics and there is evidence of water vapor in Venus’s atmosphere that is being removed slowly.
I must take a moment to complement you, Alex, for your superb voice and narration. These are unusually good, and very pleasant and satisfying to hear.
Amazing video! Thanks, Alex, and the rest of Astrum!
Thanks for the video Alex, I find Venus a fascinating place even though it is very hostile. With its phases it helped Galileo to disprove the geocentric model, what I think is quite a step forward in science research, besides being so similar to Earth in size and density but so different on anything else, makes me think on how many things have to go right for life to exist here on Earth and be rewarded at this moment in time with your voice and videos, it feels like a miracle.
Always the best videos. Great narration , info and image to match . I've been watching for years 😎
What a truly magnificent UA-cam channel, which I have only just discovered! I cannot even begin to imagine the sheer amount of work that has gone into it - making such informative, educational videos about the wonders of the cosmos, its planets, time and space!
After watching hurricane coverage for 3 days. Alex’s voice is music to my ears.
U watch news 🐑
Love this channel! Another great video
If memory serves, contrary to what is stated here, Venus is not the only planet in our solar system with retrograde rotation. Uranus rotates at around 98 degrees to its orbital plane, which means that although its rotation is approximately sideways, technically it is retrograde.
@@Roger_Gadd But its rotation is still "standard" with the rest of the planets when you consider the orientation of its North and South poles.
@@saladparfait No. You're wrong. 98 degrees declination (tilt) means the north pole has gone past sideways and is slightly pointed to the the direction where the south pole would normally be.
Crazy thought: any chance at all Uranus and Venus’ history can be related? About when did each decide (!) to ‘bend over’, as it were?
@@Roger_GaddI have a hard time visualising it: doesn’t 98 degrees mean that the North Pole could just as well be the South Pole with 82 degrees?
@@dphuntsmanno, simply no. The poles of Venus are not at any significant inclination despite being retrograde. The only possible comparison is that a collision might have caused it, but that’s highly speculative and certainly would be unrelated events.
Beyond the voice, the content is always top-notch. Each video feels thoughtful, well-paced, and keeps us coming back for more. It’s a rare talent to balance both narration and storytelling so seamlessly.
😂
One of the later Venera craft had a microphone. It worked from just before landing but died in the conditions shortly after landing. The recording is out there on the net. It makes interesting listening.
it's like 30 Seconds long, and you hear 2 "Pops", and then barely hear the Wind. Not very interesting, and just shows the low quality of "Communist Made".
The fact that Venus is losing it's upper atmosphere to space makes me wonder how it's atmosphere's composition has changed over time, and if it would be possible to figure that out.
Photolysis - solar radiation splitting (in this case) water molecules in the atmosphere, and the hydrogen escaping to space - is believed to have made the planet bone dry (the remaining hydrogen is bound into the sulfuric acid clouds). The absence of water may also explain the absence of plate tectonics, letting heat build up inside the planet, maybe leading to the total resurfacing ~X00 million years ago.
This type of Data is enormously fascinating! Thank you for offering so much information to us, they Laymen of society. The data of each Planet is so fascinating to me that when I was a kid, deep into the more scientifically driven Sci-Fi world of Stark Trek, that I created entire star systems with planets and all of the basic data that we have for our other Planets in our Solar system. I wish I can kept the endless work I poured into creating these planets, their stars, whether singular, binary or otherwise, along with each exo-planet, and accompanying satellites
Seeing all the facts and pictures of Venus and Venera Missions is fascinating. Thank you.💕
Always enjoying when Stellardrone is playing in the background music. :)
They did a huge favour by making it open license.
Does lack of plate tectonics imply that there is little or no internal convection? If so, that would explain the lack of magnetosphere.
i would think a lack of tectonics would suggest there is no solid plates below the surface, with constant volcanic action and ectreme heat there would be no time for it to cool enough to form a proper solid crust, we have tectonic action because our cooled plates float on a moving molton rock bed but venus probaby doesnt have the same depth of solid surface meaning its constantly resurfacing like over boiled porridge
@@xaraxania The thing is, all the volcanos and lava flows on Venus are very old and there has been no indication of activity for millions of years. Venus isn't constantly resurfacing, but when it does it sure goes for it on a global scale. Probably like the Siberian and Deccan traps on steroids.
No water on Venus, which is crucial for active plate tectonics. Water, counterintuitively, lowers the melting point of rock as well as increasing its plasticity.
@@xaraxania A few billion years ago (when the Sun was significantly dimmer), Venus may have been cool enough to have surface water and plate tectonics (assuming a thinner crust at that time). Loss of surface water (through runaway greenhouse effect and photolysis) may have caused any tectonics that might have existed to grind to a halt.
6:30 As an astrophysics professor from the University of Calgary (Climate of Sophistry is his channel) aptly pointed out, the temperature on Venus has nothing to do with CO2, but is a direct consequence of the compression of the gas in the atmosphere. The phenomenon is called adiabatic auto-compression and is a main component in how astrophysicists determine the atmospheric temperature of planets. It is also noteworthy to point out that this very accurately predicts the atmospheric temperature of the earth, and also shows how all of the planets in the solar system warm and cool uniformly according to the output of the sun, and their relative processions through their respective Milankovitch cycles.
How is there so much pressure.........is it because of the heat...caused by the dioxide ,because the gravity on Venus is similar to earths so it cannot be under any greater grip......how does Venus keep so much pressure
The temperature on Venues is a sum of multiple factors. Main being the green house effect caused mainly by CO2. Followed by the pressure caused also by CO2 which is a (very) heavy gas that at the gravity Venus and Earth have accumulates at the bottom of the atmospheric "ocean" that covers them.
This is the most serious problem with CO2 build up. Once it reaches a certain threshold it is impossible to reverse and the gas to disperse naturally. And with no CO2 absorbing elements (like Earth has) Venus is practically and irreversibly trapped in its current high temperature and pressure condition.
That sounds like climate science denial, so I googled that guy, and yeah, he's a climate science denier. If anyone here is curious, you can find a few blogs over the years debunking some of his media. It is weird that he seems to be an actual astrophysics researcher at Calgary, despite calling the greenhouse effect "Sophistry". Anyway, he's welcome to attempt to publish a paper on climate science, if he thinks his ideas hold up to peer review.
@@nirajpatel4148 hehehe you can calculate it. Wikipedia Atmosphere of Venus, reference 8 "how hot is Venus". You sound like "A witch! Burn a witch!" from Monty Python Holy Grail. He may be denier but physics for this is quite simple and you can see similar effect on Saturn and Jupiter. Besides, co2 radiative forcing is 'logarithmic' and Venus 98% co2 atmosphere without feedback loops cannot be compared to Earth. Most scientists in astrophysics know this and they explain that temperature on Venus is not directly caused by greenhouse effect but indirectly. Explanation is i.e. on PBS Space time.
@@nirajpatel4148 Name calling? Really? He shows the math and the basic physics. Climate "denial" is a religious term that has no business in legitimate scientific debate. Also knowing the evolutionary history of the theory of AGW is paramount. If you have no idea who the Milner Round table groups (members of whom set up the RIO climate conference and the Club of Rome) then you do not have the requisite information required to be informed on the subject. If you genuinely wish to pursue the truth of the matter, then looking into the historical vantage point I have presented is a prerequisite. Also, if you're using Google to research these topics given their proven search ranking tampering as proven by Dr. Epstein in his testimony to the US congress (someone who shares your view BTW), or the cesspool of miss and mal information known as Wikipedia, then I recommend re-thinking your approach to research - referencing an echo chamber is the antithesis of sober, rational, scientific rigor. In short, all you have to do is prove his logic and/or math wrong. No need for childish, cultish name calling. Let's be adults here please.
well presented and wonderful use of photos and diagrams.
I haven't been this early since I was born
lmfao
I was late to my birth
im not even a subscriber and i somehow wound up here
@@kaelandin I was three days late to mine. Became an emergency c-section
@@kaelandin Luckily, they couldn't start without you!
I would love it if you make more long form content like 30min+. They're great as sleeping material.
I hope it doesn't sound wierd, but it's great. And lovely facts too
it’s true - my favorite enrichment before bedtime
He has another separate channel with long form audio narration content.
Also has the Astrum Sleep podcast wherever you get your podcasts.
www.youtube.com/@astrumextra Check it out ;)
Weird? Naw we good.
Tone deaf and incredibly disinterested in the actual content that was curated--nailed it!
Wow. I witnessed the transit of venus in 2012 and I feel so special!
15mins video with only 1 ad?? You earned a like just for that itself! I was able to finally enjoy a video without ads interrupting every 2 mins
In a pristine dark sky, Venus at peak is so bright its light washes out stars around it, and it casts a hard, distinct shadow that you can clearly see with your eyes. It's remarkable.
For all the tweens to identify with: Earth is the class you're hoping for but you get Venus
If you told the Greeks that Venus looked beautiful on the outside but was actually a horrifying hellscape below the cloud layer I think they'd just agree that it was even _more_ representative of the love goddess
Something I love about Venus is that it had so much influence on humanity for so long that not until Humans finally got a look at the surface that people finally gave up that last shred of hope that they would see steaming swamps and some kind of alien version of a Land of the Lost under the clouds of Venus.
It could have been like that 1-2 bn years ago
Very interesting. I also heard too that the cloud tops of Venus we could possibly breath the air only at a certain altitude.
6:20 if Earth and Venus have same gravity, why doesn't Venus atmosphere expand, and lower its density to Earth air density? Or why doesn't Earth air compress to the same pressure as in Venus?
different composition.
I really wish we had more probes dedicated to Venus. Gliders, balloons, drones, all at different altitudes of the atmosphere, and of course rovers to drive and drill. We’ve had 60 years of material science development since the first landers were launched. Isn’t it time we do some awesome engineering and go back??!
Honestly, Pluto would have been a more accurate name for venus since pluto in Roman mythology is the God of the Underworld.
The dwarf planet pluto, on the other hand, should be named venus since it has a heart-shaped ice basin.
A cold heart?
The lack of rotational velocty is probably the cause for no dynomo generated field in conjunction with perhaps a severe rarity of uranium or thorium to decay and keep the core sufficiently molten.
Gosh I look at venus every day and thought it was a really bright start never thought about it much I want a telescope now
if you want to tell instantly if you're looking at a planet or a star, remember that planets don't twinkle.
The number of in video ads is destroying the enjoyment I used to get from your vids… can’t watch before bed anymore.
Use an Ad-Blocker.
I think that's actually a youtube problem because I don't use an adblocker and I don't believe I even got any ads.
Adblocker.
This guy speaks like he has a permanent cheeky smile on his face
I'd put Venus' lack of magnetic field down to Venus' incredibly slow and backwards rotation.
Also, the lack of a massive moon means that tidal forces are not affecting the interior.
@@daniels7907We have no other examples to go off, we are the only habitable place in the universe we know about, and we don't know if it requires a large moon, or a nearby Jupiter sized planet, or both to make it work.
@@thesenate1844 - That's actually what calls attention to this for rocky planets. Mercury, very close to the Sun and subject to strong tidal forces on it's metallic core has a magnetic field. Venus, orbiting further from the Sun with slow rotation and lacking any moons does not have one. Mars, even further away and with just two tiny asteroids as "moons" also lacks one.
There seems to be a need for some kind of dynamo causing some difference between the speed of rotation within a planet's different interior layers in order to produce such a field.
@@daniels7907 Io is a terrestrial body exposed to tremendous tidal forces, but it has no magnetic field. It has an iron core but no dynamo. Tidal forces may be a part of the puzzle, but doesn’t seem like the deciding factor.
@@michaellesak6912 - In Io's case any magnetic field would be almost impossible to measure (or sustain) given the plasma torus it creates inside of Jupiter's immensely powerful field, plus the electrical arc that extends all the way from io to Jupiter's poles. The energy that would normally be Io's field is being spread out because of its location and the effects its volcanism produce by spewing matter into the Jovian field.
I love how you narate everything ❤
No one can make you feel inferior without your consent.
I could go for 8 hours of this content, to fall asleep to.
Your voice is like a eargasm dude seriously
All your efforts are Greatly appreciated! Thank you!!
I saw the 2012 transit at school.
It was cloudy, but for a few minutes I could see that black dot on the sun. super cool! (2:40)
0:44 Sounds like my exwife
Dantavious?
The crazy hot acid laced ones are the best
@@bluepvp900😂
That was a good one
You beat me to it 😂
Such high quality space content
6 mins ago? I think i have completed youtube.
I love that I can skip forward 10s and miss nothing. This is really 3 minutes of actual content.
0:33 The "acid-laced environment" isn't necessarily as bad as you might suppose. What you have is hydrogen sulfate. For that to be sulfuric acid, you need water. There is not much of that on Venus. (However, there is some-details on request.)
Shwew! We dodged that bullet.
Great video - really enjoyed it!
As the Venera probes were sent pre-1989, you shouldn't say the Russians landed them, but the Soviets.
Soviets were Russians.
@nataliealice05 Russians were Soviets but not all Soviets were Russians.
@@nataliealice05wrong. Many non-Russians were part of the Soviet Union and many of them worked on the Soviet space program. Calling all of them Russian is not only incorrect, it's a bit disrespectful.
I grew up in the 80s and have taken it for granted that Venus has the most aggressive conditions in the solar system. It's strange to think that previous generations knew very little about the planets. I guess the current generation will feel the same way about images of Pluto.
The Romans were quite apt, then, to name Venus, the god of love. A hellish landscape, indeed.
The person who named Uranus:
Good video. Thanks guys.
Correction: Venus's axial tilt is actually greater than 177°, it is almost perfectly upside down. The fact that Venus is upside down also accounts for it's retrograde rotation.
this is one of my favourite channels ever. Ive held a presentation on black holes at my university, inspired by some of your videos. I've also plucked your channel of course ;)
Venus is like your Hidden Narcistic Girlfriend...
Shepard david star ? LoL
The one with the brother in jail for assult.
You got me hooked on Venus from your last video on Venus. Bonus! 😊😊
Finally someone wakes up about how special Venus is. But the greenhouse effect is incorrectly mentioned.
How so? I don't know any better I can't tell hehehe
How?
@@saladparfait The heat on Venus is caused by the atmospheric pressure and has nothing to do with CO2. Same as on earth but we have all been lied to about that.
Incredible images, and the pepperoni pizza you used for the thumbnail looks mouthwatering!
Just in case you’re going to reference something from USSR in future videos. Please use USSR, not Russia, because USSR contained of 15 different republics (often it was equal to very different nations) ❤❤❤😊
nice overview of the planet
early gang
I love your voice so much.... if the content of your vids weren't so interesting to listen to, I'd easily fall asleep to them... but alas, i alwsys end up listening to the very end ❤
Honestly I would refrain from using Soviet and Russian interchangeably. Venera was a Soviet space program, not a Russian one. While the Russians were a majority, countless scientists and engineers that worked on the Soviet space program were not Russians. The Soviet = Russian is a narrative that the Russians love, but is disrespectful of the other nations that were part of the USSR (many of them not by choice). I know this is not what your intent, but I felt the need to point this out.
Soviet is a historical term. Most contemporaries called the Soviet Union, Russia. It was made of the former Russian Empire, was majority ethnically Russian, and the upper echelons of the party were mostly Russian.
Soviet should be used like Byzantine. Noting an Era.
Moreover if I'm to wager, most of the Soviet Space resources went to Russia after collapse.
@@Darkfawfulx I grow up in the 70s and 80s. I used Soviet and Soviet Union. The news referred to that state as the Soviet Union. As did most USA government documents. But it was common to use Russia or Russian in conversation too. That was not true of Byzantine.
@flarvin8945 My point with Byzantium is that it is a term used by historians. Not the contemporary peoples.
And yes I'm quite aware internally the Soviets called themselves such for multiple reasons. Externally is a different story.
@@Darkfawfulx internally? Do you think I lived in the Soviet Union in the 70s and 80s? I did not. I lived in Germany and USA during that time. And I am referring to USA news and USA government using Soviet and Soviet Union. In very day conversations, Russian and Soviet were interchangeable. As were Russia and Soviet Union. Where are you claiming no one used 'Soviet'? Because when I was growing up, it was used quite common.
@flarvin8945 I never claimed nobody used Soviet. I think we're both misunderstanding eachother.
Venus is our only planet you can see with the naked eye that has phrases like the Moon❤
Venus is just like women. Beautiful on the outside, but once you get to know her, deep underneath the cover, she shows the real deal. I am sure someone here knows what I am talking about :)
Women?
Cis-het straight men?
I am an ugly virgin
Exactly. Women have been using filters before they were digital (makeup). Venus has pretty makeup but underneath it's hell lol
If it makes you feel better, she’s *hot* as hell!
Did i enjoy it? i loved it keep up the amazing work!
It really bothers me that you’re showing mercury and mars as the same size as earth and Venus. A lot of people don’t understand how much smaller they are and you’re reinforcing this.
yep, his antics only add to the problems of modern society
Hi, I noticed that you put subtitles that aren't automated, and I really appreciate that you are open to feedback ❤ as always, amazing video 😊
Venus is like those hot women from afar that can destroy your life when you touch her....
Incel
@@jamesgyoke9045 wtf
Speaking from experience huh😂
Noob
You would know how?
Starlight, star bright, first star I see tonight! ✨
Wonderful video that I love ! Thank you for sharing . Happy week-end to you !
Astrum is one reason why we need 3D tv ✌️🥰
The impact hit causing the moon hypothesis is very popular but not a known fact yet.
Great video, just add a disclaimer for things that are the popular belief but not yet proven.
There’s a lot of evidence it did happen. Collisions were common in the early solar system. Jupiter wiped out the Super Earths after all, a very common type of world in the universe.
@@abloogywoogywoo hence why its popular
There are also other potentially viable causes as well requiring no impact.
It's not in the realm of fact yet and there are some problems with this as well, hence why I asked for a disclaimer.
Your comment doesn't address this, simply having a lot of evidence for a hypothesis doesn't mean it happened.
@@dawienel1142 when you have two or more competing hypotheses why would pick the ones with less evidence?
@@dawienel1142 offer an alternative - however, you have no frame of reference since you can’t point to a host planet that has a satellite with such a large relative mass to the primary. Demoted to dwarf planet Pluto doesn’t count. Eventually as the Moon moves away, Earth becomes tidally locked to it, and the two become a double planet system. Again, no exosolar system examples. This is why I said there is a lot of evidence for the impact hypothesis.
@@abloogywoogywoo Why would you pick any without conclusive evidence?
Imagine a tourist ad for Venus: "Even during the winter It's never cold here."
3:36 "all the planets orbit anti-clockwise..." is only a matter of perspective. The orbit is exactly opposite seen from the other side.
I look forward to more images of foggy, crisp mornings on Golden Pond amongst the birch trees--of Venus.
Good to watch a new video of Venus. I can't fathom the conditions there and the scale of the landmass among it.
Nobody has ever said it was Earth's twin. Youre the first person in my 15 years of studying astronomy that has said this.
I heard it several times in the last 25-15 yrs.
same @@clauslangenbroek9897
Amazing video, fascinating stuff.
Another great job Alex Thanks 👍
I wonder if other planets in our solar system harbour simple or even microscopic life. If the Mariana trench here on Earth taught us one thing, it was that sometimes life exists in the most unexpected and inhospitable places. So sometimes I wonder what lurks under the atmospheres of Jupiter Saturn Neptune and Uranus.
I find absolutely no reason why anyone would think you crazy if you described this meeting of ours.
Thank you
I took an absolutely fabulous picture of Venus a few months ago from the cockpit. I wished that I could post it here!
I didn't know that there was more than two probes with cameras
There were clearly pictures I hadn't before
This was a perfect overview of Venus
Great video!
I don't think I've ever gotten a reply on here before, and as a fellow content creator, I understand it's not always easy. However. I do have a question that I hope that you or someone else could find some time to answer. I always hear that Venus' acid rains evaporate before reaching the surface, but wouldn't the intense pressure allow it to retain its liquid form even at those high temperatures? Also there are unexplored "river" valleys all throughout Venus that scientists can't explain as lava flows since they are too long and intricate. Could these have been carved out by sulfuric acid river flows if my above theory is correct?
Also the lack of a magnetic field seems obvious to me but maybe there's more to it. The rotation of the Earth as well as it's moon generate more friction and tidal forces respectively. Venus has the slowest rotation of any planet and it's the only planet that lacks moons besides Mercury. Certainly that would reduce is interior heat/dynamo? Thanks in advance.
Due to the higher surface (and underlying crustal) temperature, one could reasonably expect lava flows on Venus to travel somewhat farther from their sources, before solidifying. Recall from the video (and other sources) that nearly all of Venus' surface is covered by lava flows.
@@stuartparker-q3o To my knowledge, though, no active volcanism has been observed on Venus. In fact, Earth is more volcanically active. The Venusian service is covered in volcanoes and ancient lava lows (relatively young ones) but it's thought that these are for the most part, inactive or dormant and they were formed as a result of a one time event that essentially resurfaced the atmosphere and its planet. It's also believed that the Venusian core and mantle are smaller and cooler than Earth's. So basically something happened to trigger intense volcanism over a short amount of time. I think that maybe Venus once had a moon that eventually got too close and collided with the planet, triggering the intense volcanism and the subsequent CO2 and sulfur atmosphere. As well as the reversed rotation. Also I'd love some insight on the acid rain question I had in the original comment.
@@FromNothing Subsequent orbital images of Venus HAVE suggested new/recent Lava flows - but perhaps not confirmed/vetted.
Brilliant videos for a curious layman 👌🏼