Chuck is so fast on his feet. Absolutely hilarious, you guys work so well together I'm always excited to see a new video especially when its on something I think I know all about and Neil just has some way of making even known things fascinating.
I NEED to see Neil do more calculations in his mind. Truly fascinating to witness it happen. As a layman it opens ones mind to how the calculation makes sense Been listening for 5 years, thanks to a childhood friend who died on Christmas day 2021. Ölvir would have loved this video.
Neil probably knew that speed. It was for show. It's a sad commentary for the USA that we still need to do U.S. and metric conversions in the first place. We really resist progress and evolution in the U.S. A large percentage want us to actually go backwards.
There's also the Molniya orbit, that allows you to approximate geostationary for high latitudes; polar orbit, that allows you to see the Earth's entire surface; and sun-synchronous orbit, that's almost a polar orbit but allows your satellite to always be in sunlight. That last is a popular one these days, which is why we're starting to see more high-latitude launch sites in places like Alaska and Scotland. The fourth country that tested an antisat was India.
Our World was the first live, international, satellite television production, which was broadcast on 25 June 1967. Creative artists, including the Beatles, opera singer Maria Callas, and painter Pablo Picasso - representing nineteen nations - were invited to perform or appear in separate segments featuring their respective countries. The two-and-a-half-hour event had the largest television audience ever up to that date: an estimated 400 to 700 million people around the globe watched the broadcast. Today, it is most famous for the segment from the United Kingdom starring the Beatles. They performed their song "All You Need Is Love" for the first time to close the broadcast.
We have come a long way technologically since then, fairly quickly. Too bad we haven't advanced/evolved enough as a species and are on the verge of causing our own extinction.
I did a data project not even 2 weeks ago and among some of the categories these orbits were mentioned. This video really helps, I want to go back and make some tweaks now that I have some more context. Thanks, Neil!
Thanks for this video as I learned a few things. The idea of a Space Elevator is truly intriguing. I wonder if we'll ever see one built. It could make space more accessible to average people who aren't Billionaires, actors, etc.
This channel I can listen everynight until i sleep. space and stars eases you a bit....I remember when I was kid my grandfather used to tell stories of the stars....it kinds of reminds me that too...as always keep looking up.
i remember going to the Andover Observatory in Maine as a kid! they had a camera that beamed our images off the Telstar satellite and showed on the tv monitor in the room ! I took their word for it!
8:02 A geosynchronous orbit also has a period of one sideral day like the geostationary orbit. The difference is that the geostationary orbit is a circle over the equator (i.e. it has an angle of 90° with respect to the Earth's axis), whereas geosynchronous orbits can be circles as well as elipses with any angle.
I believe far, since you are never in freefall, you are essentially geostationary on all altitudes, so you'd need to go 37800km according to google to experience 0.3m/s2, as opposed to 9.81 on the ground
weightlessness is the same as falling. you weigh zero. the only weight you would feel would be as the elevator accelerated/decelerated, steady travel speed you would be weightless.
After consuming copious amounts of Majic mushrooms 🍄 I believe I had a moment with that trio. Bless up from Brooklyn NY. Outstanding episode Sir's It would be an understatement to state that within 8 hours I may have orbited Jupiter. (Mushrooms were supplied by a licensed provider/ Doctor and staff were in Colorado facility. Leo, Geo and Neo. We will meet again. Going back for another session in 6 months
@Aidan m You know so much about everything "YET KNOW NOTHING ABOUT ANYTHING " I find your trolling interesting & your potential undiagnosed mental health issues alittle concerning. Seek therapy friend
Hi from Brazil 🇧🇷 I love the channel and never miss the chance to listen to some star talks. Like to see girl from Ipanema being mentioned. I have to agree that it would be such a boring elevator tough 😂
Awesome video, great explanation. Next, Please do working of GPS satellites or Starlink satellites in detail. Also, it would be great if you add some animations or pictures in the video, that would really help in understanding. Anyways, always loved your videos.
Does debris always slow down little by little? Is there enough atmosphere out at further or it’s to continue this process so eventually the debris field will dissipate?
Since it is so small and usually very high speed, forces impacting it are barely noticeable, and since there is no atmosphere, there is no friction also, it will outlive us is what i'm trying to say
@@eozineable no atmosphere is an exaggeration. The atmosphere doesn’t end, it thins infinitely close to zero. But I get your point. Too fast, too small, too little resistance. Deceleration is on a very long scale, got it.
@@joncote6035 Yes, debris slows down because there is a tiny bit of atmosphere. The ISS has to be moved to a higher orbit every so often. It is in LEO.
Question if there's less friction in space couldnt you build a generator that is constantly making electrons? Therefore speeding up the battery shortage issue on earth.
It was great seeing you in Huntsville on June 12th. My son's & I delayed our vacation two days in order to see your postponed talk. Did you do anything interesting in Huntsville between June 8 & 12?
5:45 The higher your orbit is the longer your orbit it takes you to complete an orbit. Because your moving slower and slower, and the distances are getting bigger and bigger. All of this is true, except you actually need to accelerate faster and faster. However because the distance to complete an orbit around the Earth becomes much much greater as your altitude increases, the amount of distance transited over the Earth's surface over time is less and less.
It would be fun to “drop” a tiny satellite from geostationary (just a slight boost towards earth) and watch how long it takes to fall to earth. It’s velocity towards earth should be really really fast by the time it gets to the atmosphere.
@@Dad_Brad That's not really how orbits work. You could launch something to geostationary orbital altitude and never accelerate it to orbit, but you wouldn't need to "boost" it towards Earth. It would just fall under gravity. However to answer your question it wouldn't be going any more or less faster than dropping it from virtually any other altitude. Gravity would accelerate to terminal velocity. Not possible for gravity to accelerate it beyond that.
@@rob_i208 I see your point. I think that’s right. I remember a thought experiment about drilling a hole all the way through the center of the earth. If you create the tunnel so that it’s a vacuum inside with no resistance- if you dropped an object down the tunnel it would accelerate to a speed of orbital velocity as it passes through the center of the earth. Slowly decelerating again as it comes closer to the other end of the tunnel. If one person was standing in Peru, the other end of the tunnel would be in Vietnam. Earth Sandwich.
This was fun. So A. Clarke invented the com sats and Isac Asimov invented the LEO way back in the 17th century, now that was one mighty feat of imagination! :)
One weird thing about orbits is that you have to increase velocity to reach a higher orbit, but when you circlize, your orbital speed will be slower that it was in the lower orbit.
What supports the orbiting platform from which the rope is dropped to Earth? How would the elevator rise instead of pulling the platform back down to Earth?
Telstar was not a synchronous satellite. Only brief television signals could be broadcast from Europe to North America were available and we knew right away that a large number would need to be launched. I worked at Hughes Aircraft Co. at the time that their company financed Syncom 1 was launched, making ATT's Bell Labs scheme for large, tracking dishes at much greater expense, obsolete. Now we are revisiting the tracking ground station idea and swarms of LEO satellites with much cheaper automated versions possible.
Dropping a rope down from geostationary orbit all the way to my backyard sounds interesting, but I wonder what the weight of the rope would do. Wouldn’t it’s weight cause the satellite to fall down unless you used a rocket motor to keep the satellite at orbital velocity?
The rope would need to continue farther into space with a counterweight at its end to cancel out the weight of the rope beneath the satellite. en.wikipedia.org/wiki/Space_elevator
The satellite would already have the weight of the rope since launch. The weight wouldn't increase just because you lowered the rope, because its already there.
I’m recovering from a nasty bike accident where a patch of pine needles caused me to continue in an unwanted straight line. Thank you for getting my mind through while the body rests 🧑🏽🦽
You two always make me smile and laugh when I'm annoyed by my low earth orbit madness by observing those above and feeling the pain for those below like I can’t just go higher to find out why ant nobody answering the space signal phone . Again thanks for the laughs and smiles cause that’s not easy to do. Much Love to you and your family, you are appreciated. Aug 4 btw
Freddie from Brevard County, FL. I need another Explained on this one. When I was young, my father spoke of this theory that over long periods of time each planet in our solar system moves closer and closer to the sun. I understand how this can this can be discounted as planets are moving with a constant velocity(acceleration?), encountering no resistance, through the "vacuum" of space, allowing them to maintain their orbits.However, suppose an asteroid, comet, or meteor impacted the surface of a celestial body orbiting another with immense force, and possibly at a tangential angle opposite to its motion in orbit. Could this theoretically slow the orbiting body so much that it loses the velocity(/acceleration?) necessary to maintain its own orbit? If yes, then would it it be likely for the orbiting body to fall into the body its orbiting as our own satellites sometimes do? And if yes, why have I heard that the moon's orbit is slowly moving away from Earth's (about 1 1/2" a year) when the moon is (as we can plainly see) often bombarded these types of objects? Is this just a false fact that I was taught in elementary school? Please help me out.
One big error here. Geosynchronous orbits are not an integer number of orbits per one Earth rotation. They are the same period as Earth rotation just like geostationary, but they may be inclined relative to the equatorial plane and thus don't stay above the same exact location above the Earth. The form a figure 8 with height equal to the inclination when viewed from the ground. So, geostationary are special case of geosynchronous with zero inclination and thus appear to be at a stationary location relative to the ground.
Since the "rope" of the "space elevator" will occupy positions from the ground all the way up to the "anchor" satellite, how is any "orbit" stabilized? Would the "anchor be at 22,500 miles or would it be higher. Is there some kind of special math for this very strange orbit? Would the "car" climbing the "rope" alter the orbit in any way? What if a large aircraft crashes into the rope at a lower altitude?
hi tensile electrical braided lines supported by ion drives at intervals on the way up to cancel out accumulated gravitational mass would work i recon but it wouldn't be cheap
Neil and Chuck, have you done a star talk about light/electromagnetic spectrum? Like a broad overview? I have so many questions. If a photon is massless why does it have a speed limit or why does it react to gravity or why does it knock around quantum particles? How does a being in the 4th dimension perceive the electromagnetic spectrum with respect to time? What can I do to join the podcast to ask these questions? I don't really have any credentials except that I went to college for engineering and have done open mic stand up. I am like a combo of the two of you except significantly less knowledgeable than Neil and half as funny as chuck. Although I do think Chuck and I would have some good laughs.
Not sure if I got the whole thing right, but I want to ask: What prevents a satellite or whatever body that is orbiting the Earth to have a geosynchronous orbit at lower altitude than "THE" geosynchronous orbit that is set in stone? In other words why cannot GEO be MEO at the same time?
You end up moving too slowly and fall back down to Earth. I mean, technically you can do it for a while if you keep using fuel, but if you want to just shoot it into orbit and have it stay there, it needs to move at a certain speed and that speed in low earth orbit is WAY too fast to be geosynchronous.
What is the height that you see the curvature of Earth. ? If at height 32km you can see the horizon at distance 640km. Than it is 6.4 degree for each direction. The Field of vision is 180-6.4*2=167.2 degree. Good eye Eyes can see angle of 160 degrees but okd eyes only 140 degrees. Depends how good your vision.
Standing on the beach looking out into the sea. You’re seeing the curvature of the earth because the horizon is only 3-4 miles if you’re ~ 5-6ft tall. If the earth were flat I suppose you would see the ocean to as far as the eye could see
@@Dad_Brad Except that the atmosphere would eventually be dense enough (you are looking THROUGH it!) to block out light. So in reality IF the earth were flat, AND that everything else that needed to exist for that to be so was in place, THEN you could see quite far, but not far enough to see across an ocean.
@@rickkwitkoski1976 I agree, yes you’re right. That’s interesting to think about, I wonder exactly how far the eye would be able to see in that case. I doubt anything past 100 miles.
If "space" is defined as above the Karman line at 100 km altitude, it took just over 4 minutes for a space shuttle. However, its speed at that point (about Mach 8) was less than one third of what it takes to achieve an orbit, so the next 4 minutes until main engine shutdown and external tank separation was mainly used for horizontal acceleration.
So, in essence it would be true to say our continents, countries right down to our houses are in geostationary orbits if observed from the Earth's core?
The question, nobody asks for: If somehow the ground stops interacting with you, and you fall just through it, in which orbit would you end up? BEO (below earth orbit) ?
So I never used my legs for rope climb. This isn't bragging. 😅 I lack the coordination. Same with swimming, which I'm pretty sure I'm not terribly fast at. You all should listen to Oscar Peterson's Garota de Ipanema. In my opinion, it's the best recording of the song, or at least the least muzak variant.
@@toby9999 swimming was super hard for me to figure out, and I had a fear of drowning. I also get vertigo when I'm high up. Idk if that made a difference.
A geosynchronous orbit is that high Earth orbit allowing satellites to match Earth's rotation. Geostationary, which is located at 22,236 miles (35,786 kilometers) above Earth's equator, requires constant maintenance to keep the platform exactly above the earth location you choose. And "the planets" is one track from the "space elevator" music, along with classic Rock from CCR, and the Stones. Beyond that, the Aliens who come by Earth probably just say, "They're rednecks, just ignore them."
What would you do if you ran into LEO, MEO and GEO in a dark alleyway?
I would fall away from Earth
I would promise to have the money by tomorrow.
I'd say it took you long enough.. What's the "hold up?"
Paralyze them with my B-O ! 😜
I'd say, "One of these days, all 3 of you cats are going to live in a house with a crazy lady."
I’m going through a rough moment, and watching StarTalk has been a gift of a distraction, thank you
For me the same i am in rehab and constantly watching neil and chuck
Agree!
i have chronic pulsating tinnitus
and these really do help (distraction and so on..)
@@kindu812 i remember seeing the green mile in rehab.. (2002)
wow what a movie.. that was good and helpful
That's good, it's a healthier distraction than most
@@davidevans3227that's treatable right?
Chuck is so fast on his feet. Absolutely hilarious, you guys work so well together I'm always excited to see a new video especially when its on something I think I know all about and Neil just has some way of making even known things fascinating.
Lord Nice is indeed a intellectual man of mystery
So glad to hear it! :)
Glad you find him funny. I often stop watching once he starts talking. Hard to understand why he is on this show anyway. Cringe….
Guessing Neil gives him the 'script' prior... and based off Neil's reactions, he doesn't tell Neil what he's gunna say 🤣
Chuck's beard is hideous tho
Yet another fantastic explanation! I love how you make even complex topics easy to understand.
We’ll keep doin’ it!
I NEED to see Neil do more calculations in his mind. Truly fascinating to witness it happen. As a layman it opens ones mind to how the calculation makes sense Been listening for 5 years, thanks to a childhood friend who died on Christmas day 2021. Ölvir would have loved this video.
My sympathy for your loss, Bjarki. It's tough losing someone you care for near Christmas. (((((hugs)))))
@@MaryAnnNytowl Thank you Mary
Sorry for your loss, Bjarki. ❤️ Glad the magic of curiosity lives on in you!
@@StarTalk It lives thanks to excellent science communicators, who I truly cherish.
Neil probably knew that speed. It was for show. It's a sad commentary for the USA that we still need to do U.S. and metric conversions in the first place. We really resist progress and evolution in the U.S. A large percentage want us to actually go backwards.
4:37 SIXTEEN Sunrises, not eighteen! ☀️🌞
Exactly
Can we all just acknowledge how amazing Chuck Nice is? Like, I know he's a comedian but he's so on point and he's so right there.
Love starting my day learning about the universe with Neil & Chuck!
There's also the Molniya orbit, that allows you to approximate geostationary for high latitudes; polar orbit, that allows you to see the Earth's entire surface; and sun-synchronous orbit, that's almost a polar orbit but allows your satellite to always be in sunlight. That last is a popular one these days, which is why we're starting to see more high-latitude launch sites in places like Alaska and Scotland.
The fourth country that tested an antisat was India.
Thanks for the info!
Awww... you beat me to it. I was going to mention Molniya under the heading of geosynchronous.
Our World was the first live, international, satellite television production, which was broadcast on 25 June 1967. Creative artists, including the Beatles, opera singer Maria Callas, and painter Pablo Picasso - representing nineteen nations - were invited to perform or appear in separate segments featuring their respective countries. The two-and-a-half-hour event had the largest television audience ever up to that date: an estimated 400 to 700 million people around the globe watched the broadcast. Today, it is most famous for the segment from the United Kingdom starring the Beatles. They performed their song "All You Need Is Love" for the first time to close the broadcast.
We have come a long way technologically since then, fairly quickly. Too bad we haven't advanced/evolved enough as a species and are on the verge of causing our own extinction.
Thanks for the info!
Please do a video on how the space elevator would conceivably work! Sounds amazing!
Noted! 🗒
I did a data project not even 2 weeks ago and among some of the categories these orbits were mentioned.
This video really helps, I want to go back and make some tweaks now that I have some more context. Thanks, Neil!
Sounds like an interesting project! Glad we could teach you something!
chuck is perfect in these, always making jokes right when he needs to and not trying to step on neil’s heels and seem like he’s interrupting
Thank you guys for some interesting facts about our planet. Knowledge is truly power.
It is 🙌
You two are the best keep them coming!
So now I have a vision of a giraffe with a baseball glove on NASA's wanted list.
Thanks for this video as I learned a few things. The idea of a Space Elevator is truly intriguing. I wonder if we'll ever see one built. It could make space more accessible to average people who aren't Billionaires, actors, etc.
That’s the hope!
Neil's laugh is brighter than a star.
Thank you for captions! Wish Brillant was as accessible!
This channel I can listen everynight until i sleep. space and stars eases you a bit....I remember when I was kid my grandfather used to tell stories of the stars....it kinds of reminds me that too...as always keep looking up.
This is fantastic.. im enjoying every minute of it.
So glad you’re enjoying :)
Nice Job, Fellas!
*I'm here for the banter...* @10:21
The knowledge too, of course, but there's no discounting the value of the banter.
Please continue to educate me. 😁
Will do!
@@StarTalk I am grateful 🙏😊
I like Geo, the tv dish I installed 22 years ago still works with the same aim!
Nicely explained
Can we do not only an explainer but an entire cosmic queries on MAGNETISM and our inability to understand it fully? Please?
Noted! 🗒
You guys make doing the dishes after a long, hard day of parenting so much lighter. Thanks for you and doing what you do
I am learning here, thanks
Awesome 👏
Chuck impersonating loan sharks made my day.
11:30 India did it too.🇮🇳💪🙏
Incredible 🔥
i remember going to the Andover Observatory in Maine as a kid! they had a camera that beamed our images off the Telstar satellite and showed on the tv monitor in the room ! I took their word for it!
No mention of HEO, highly elliptical orbit, like the Russian Molniya satellites.
Nor Polar orbits (probably just a special case of HEO, come to think of it)
Gotta love the Jean-Claude Van Damme reference ;) great explainer as always guys!
Good stuff
Very interested in the space elevator! Not sure how it would work or what it would be used for, but cool stuff! Love this show!
It is impossible, the weight of the rope would drag it down or snap it.
@@Bratfalken I’m sure it wouldn’t be a conventional elevator… something maybe like a fueling station or something…
Wonderfully understandable explanation🤗
8:02 A geosynchronous orbit also has a period of one sideral day like the geostationary orbit. The difference is that the geostationary orbit is a circle over the equator (i.e. it has an angle of 90° with respect to the Earth's axis), whereas geosynchronous orbits can be circles as well as elipses with any angle.
Newton - "The guy was kinda smart, I gotta give it to him", classic, I almost choked on a mouthful of wine when that one came out!
If it was possible to have an elevator up to a space station in geo stationary orbit , when would weightlessness begin ?
I believe far, since you are never in freefall, you are essentially geostationary on all altitudes, so you'd need to go 37800km according to google to experience 0.3m/s2, as opposed to 9.81 on the ground
weightlessness is the same as falling. you weigh zero. the only weight you would feel would be as the elevator accelerated/decelerated, steady travel speed you would be weightless.
love you guys 😢
After consuming copious amounts of Majic mushrooms 🍄 I believe I had a moment with that trio. Bless up from Brooklyn NY. Outstanding episode Sir's
It would be an understatement to state that within 8 hours I may have orbited Jupiter. (Mushrooms were supplied by a licensed provider/ Doctor and staff were in Colorado facility.
Leo, Geo and Neo. We will meet again. Going back for another session in 6 months
🖖
@Aidan m Someone needs a hug and some therapy. Thank you for projecting.
@Aidan m You know so much about everything "YET KNOW NOTHING ABOUT ANYTHING " I find your trolling interesting & your potential undiagnosed mental health issues alittle concerning. Seek therapy friend
Hi from Brazil 🇧🇷 I love the channel and never miss the chance to listen to some star talks. Like to see girl from Ipanema being mentioned. I have to agree that it would be such a boring elevator tough 😂
Awesome video, great explanation. Next, Please do working of GPS satellites or Starlink satellites in detail.
Also, it would be great if you add some animations or pictures in the video, that would really help in understanding. Anyways, always loved your videos.
Does debris always slow down little by little? Is there enough atmosphere out at further or it’s to continue this process so eventually the debris field will dissipate?
Since it is so small and usually very high speed, forces impacting it are barely noticeable, and since there is no atmosphere, there is no friction also, it will outlive us is what i'm trying to say
@@eozineable no atmosphere is an exaggeration. The atmosphere doesn’t end, it thins infinitely close to zero. But I get your point.
Too fast, too small, too little resistance. Deceleration is on a very long scale, got it.
@@joncote6035 Ye ye obviously, it is never truly zero even in vacuum
@@joncote6035 Yes, debris slows down because there is a tiny bit of atmosphere. The ISS has to be moved to a higher orbit every so often. It is in LEO.
Fascinating to think how the space elevator would be designed to withstand different conditions.
Question if there's less friction in space couldnt you build a generator that is constantly making electrons? Therefore speeding up the battery shortage issue on earth.
you can't MAKE electrons!
@@rickkwitkoski1976 how so?
Arthur C Clarke wrote a novel based on the idea on a space elevator
Yes he did. Taking his OWN idea about GEO satellites as the basis for the plot.
Now I get the "foundation's" elevator. Thanx
Chuck is dope 😀
It was great seeing you in Huntsville on June 12th. My son's & I delayed our vacation two days in order to see your postponed talk. Did you do anything interesting in Huntsville between June 8 & 12?
5:45 The higher your orbit is the longer your orbit it takes you to complete an orbit. Because your moving slower and slower, and the distances are getting bigger and bigger.
All of this is true, except you actually need to accelerate faster and faster. However because the distance to complete an orbit around the Earth becomes much much greater as your altitude increases, the amount of distance transited over the Earth's surface over time is less and less.
It would be fun to “drop” a tiny satellite from geostationary (just a slight boost towards earth) and watch how long it takes to fall to earth. It’s velocity towards earth should be really really fast by the time it gets to the atmosphere.
@@Dad_Brad That's not really how orbits work. You could launch something to geostationary orbital altitude and never accelerate it to orbit, but you wouldn't need to "boost" it towards Earth. It would just fall under gravity.
However to answer your question it wouldn't be going any more or less faster than dropping it from virtually any other altitude. Gravity would accelerate to terminal velocity. Not possible for gravity to accelerate it beyond that.
@@rob_i208 I see your point. I think that’s right. I remember a thought experiment about drilling a hole all the way through the center of the earth. If you create the tunnel so that it’s a vacuum inside with no resistance- if you dropped an object down the tunnel it would accelerate to a speed of orbital velocity as it passes through the center of the earth. Slowly decelerating again as it comes closer to the other end of the tunnel. If one person was standing in Peru, the other end of the tunnel would be in Vietnam. Earth Sandwich.
This was fun. So A. Clarke invented the com sats and Isac Asimov invented the LEO way back in the 17th century, now that was one mighty feat of imagination! :)
Wished you would also state the measurements in metric. Believe it or not, there are many people who have to convert from US Customary units.
Whats the G stand for of GEO?
One weird thing about orbits is that you have to increase velocity to reach a higher orbit, but when you circlize, your orbital speed will be slower that it was in the lower orbit.
Tell us about orbital rings
It would have been awesome for you to go into which one of those the moon fits into, and WTF happened when it got hit by something back in March.
It was a Chineese rocket if i recall
We covered the rocket crash on the Moon back in March! ;) ua-cam.com/video/6H4a4abhQ6I/v-deo.html
I suggest rftools for auto crafting storage reading
What supports the orbiting platform from which the rope is dropped to Earth? How would the elevator rise instead of pulling the platform back down to Earth?
@11:30 India! US, Russia, China and India
Chucks Italian accent is great. Laughing! Happy to see Neil laughing. No CP Snow. Red Pill. Trinity and Neo.
Telstar was not a synchronous satellite. Only brief television signals could be broadcast from Europe to North America were available and we knew right away that a large number would need to be launched. I worked at Hughes Aircraft Co. at the time that their company financed Syncom 1 was launched, making ATT's Bell Labs scheme for large, tracking dishes at much greater expense, obsolete. Now we are revisiting the tracking ground station idea and swarms of LEO satellites with much cheaper automated versions possible.
What about Molniya orbit? (Is Tundra also an orbit?) Hoping to hear about those too.
How long of an elavator ride would it be?
Dropping a rope down from geostationary orbit all the way to my backyard sounds interesting, but I wonder what the weight of the rope would do. Wouldn’t it’s weight cause the satellite to fall down unless you used a rocket motor to keep the satellite at orbital velocity?
How does a rocket propel in a vacuum? Too many silly stories about space to keep the contradiction at bay.
@@irishdruidess7391 space is real.
The rope would need to continue farther into space with a counterweight at its end to cancel out the weight of the rope beneath the satellite.
en.wikipedia.org/wiki/Space_elevator
@@irishdruidess7391 two tanks, one with oxygen, the other with combustibles, put them in the same tube, light em up, facing the vacuum
Next question
The satellite would already have the weight of the rope since launch. The weight wouldn't increase just because you lowered the rope, because its already there.
Neil, i wonder what's the shift from Euclidean geometry to non euclidean is like ? Why do we need non euclidean geometry at the first place?
The Legend Neil deGrasse Tyson!
I’m recovering from a nasty bike accident where a patch of pine needles caused me to continue in an unwanted straight line. Thank you for getting my mind through while the body rests 🧑🏽🦽
You two always make me smile and laugh when I'm annoyed by my low earth orbit madness by observing those above and feeling the pain for those below like I can’t just go higher to find out why ant nobody answering the space signal phone . Again thanks for the laughs and smiles cause that’s not easy to do. Much Love to you and your family, you are appreciated. Aug 4 btw
Freddie from Brevard County, FL. I need another Explained on this one. When I was young, my father spoke of this theory that over long periods of time each planet in our solar system moves closer and closer to the sun. I understand how this can this can be discounted as planets are moving with a constant velocity(acceleration?), encountering no resistance, through the "vacuum" of space, allowing them to maintain their orbits.However, suppose an asteroid, comet, or meteor impacted the surface of a celestial body orbiting another with immense force, and possibly at a tangential angle opposite to its motion in orbit. Could this theoretically slow the orbiting body so much that it loses the velocity(/acceleration?) necessary to maintain its own orbit? If yes, then would it it be likely for the orbiting body to fall into the body its orbiting as our own satellites sometimes do? And if yes, why have I heard that the moon's orbit is slowly moving away from Earth's (about 1 1/2" a year) when the moon is (as we can plainly see) often bombarded these types of objects? Is this just a false fact that I was taught in elementary school? Please help me out.
Neil has to explain such things as it is never seen by anyone!
Good space-elevator music? Easy - "Stairway to Heaven"
There is an art, or rather, a knack to flying. The knack lies in learning how to throw yourself at the ground and miss. - Douglas Adams
One big error here. Geosynchronous orbits are not an integer number of orbits per one Earth rotation. They are the same period as Earth rotation just like geostationary, but they may be inclined relative to the equatorial plane and thus don't stay above the same exact location above the Earth. The form a figure 8 with height equal to the inclination when viewed from the ground. So, geostationary are special case of geosynchronous with zero inclination and thus appear to be at a stationary location relative to the ground.
That intro had me literally dying in laughter.
Since the "rope" of the "space elevator" will occupy positions from the ground all the way up to the "anchor" satellite, how is any "orbit" stabilized? Would the "anchor be at 22,500 miles or would it be higher. Is there some kind of special math for this very strange orbit? Would the "car" climbing the "rope" alter the orbit in any way? What if a large aircraft crashes into the rope at a lower altitude?
A space elevator will need a _counterweight_ higher up to solve that problem:
en.wikipedia.org/wiki/Space_elevator
hi tensile electrical braided lines supported by ion drives at intervals on the way up to cancel out accumulated gravitational mass would work i recon but it wouldn't be cheap
Leo, Meo and Geo.... Those scary Italians.
Neil and Chuck, have you done a star talk about light/electromagnetic spectrum? Like a broad overview? I have so many questions. If a photon is massless why does it have a speed limit or why does it react to gravity or why does it knock around quantum particles? How does a being in the 4th dimension perceive the electromagnetic spectrum with respect to time? What can I do to join the podcast to ask these questions? I don't really have any credentials except that I went to college for engineering and have done open mic stand up. I am like a combo of the two of you except significantly less knowledgeable than Neil and half as funny as chuck. Although I do think Chuck and I would have some good laughs.
What about HEO?
Not sure if I got the whole thing right, but I want to ask: What prevents a satellite or whatever body that is orbiting the Earth to have a geosynchronous orbit at lower altitude than "THE" geosynchronous orbit that is set in stone?
In other words why cannot GEO be MEO at the same time?
You end up moving too slowly and fall back down to Earth. I mean, technically you can do it for a while if you keep using fuel, but if you want to just shoot it into orbit and have it stay there, it needs to move at a certain speed and that speed in low earth orbit is WAY too fast to be geosynchronous.
Chack Nice you are so funny! Love your joke from Italia 😃
yes, but they forgot about the overall weight of the elevator itself as only a very small fraction of the elevator structure is weightless.
What is the height that you see the curvature of Earth. ? If at height 32km you can see the horizon at distance 640km. Than it is 6.4 degree for each direction. The Field of vision is 180-6.4*2=167.2 degree. Good eye Eyes can see angle of 160 degrees but okd eyes only 140 degrees. Depends how good your vision.
Standing on the beach looking out into the sea. You’re seeing the curvature of the earth because the horizon is only 3-4 miles if you’re ~ 5-6ft tall. If the earth were flat I suppose you would see the ocean to as far as the eye could see
@@Dad_Brad Except that the atmosphere would eventually be dense enough (you are looking THROUGH it!) to block out light. So in reality IF the earth were flat, AND that everything else that needed to exist for that to be so was in place, THEN you could see quite far, but not far enough to see across an ocean.
@@rickkwitkoski1976 I agree, yes you’re right. That’s interesting to think about, I wonder exactly how far the eye would be able to see in that case. I doubt anything past 100 miles.
Neil: "If you want to be parked, we call that geostationary."
If you want to be "double-parked," we call that the Riley Reed orbit.
GREETINGS FROM CHILEEEEEE.
If it was possible to create a tethered GEO station, everything in LEO and MEO would keep crashing into your tether. Good luck with that.
Ummm... NO! GEO and MEO are not just around the equator. They are at an angle. The ISS is such and almost everything else is as well.
@@rickkwitkoski1976 I think no matter where the GEO station was, there would be a lot of junk in the LEO and MEO layers below that would take it out.
Hey Neil how long does it take to fly into space from the Earth's surface?
Like 6 minutes, it really depends on what you call space. Google is a thing.
@@SCY710 duhhh you don't say hmmm 🤔 I've never heard of it.. I'm old school I don't Google
@bradley hall THANKS
If "space" is defined as above the Karman line at 100 km altitude, it took just over 4 minutes for a space shuttle. However, its speed at that point (about Mach 8) was less than one third of what it takes to achieve an orbit, so the next 4 minutes until main engine shutdown and external tank separation was mainly used for horizontal acceleration.
@bradley hall *mach
So, in essence it would be true to say our continents, countries right down to our houses are in geostationary orbits if observed from the Earth's core?
The question, nobody asks for:
If somehow the ground stops interacting with you, and you fall just through it, in which orbit would you end up?
BEO (below earth orbit) ?
You'd orbit the earth. That orbit would be *inside* the Earth but it would still technically be an orbit.
I love watching Chuck feign ignorance. Never underestimate the intelligence of the comedic mind.
You're not gonna see him but he's always gonna be there watching you.
So I never used my legs for rope climb. This isn't bragging. 😅 I lack the coordination. Same with swimming, which I'm pretty sure I'm not terribly fast at. You all should listen to Oscar Peterson's Garota de Ipanema. In my opinion, it's the best recording of the song, or at least the least muzak variant.
You must have a different body than mine. I can't climb ropes or swim even with legs.
@@toby9999 swimming was super hard for me to figure out, and I had a fear of drowning. I also get vertigo when I'm high up. Idk if that made a difference.
A geosynchronous orbit is that high Earth orbit allowing satellites to match Earth's rotation. Geostationary, which is located at 22,236 miles (35,786 kilometers) above Earth's equator, requires constant maintenance to keep the platform exactly above the earth location you choose. And "the planets" is one track from the "space elevator" music, along with classic Rock from CCR, and the Stones. Beyond that, the Aliens who come by Earth probably just say, "They're rednecks, just ignore them."
Based upon the rope theory will the weight of the rope pull down the platform?
If you are being pulled up in a space elevator, then you wouldn't need to travel faster than the escape velocity.