Q&A 151: Would They Warn Us About the End of the World? And More...
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- Опубліковано 22 чер 2024
- In this week's questions show, I explain what would happen if scientists discovered an existential threat to humanity. Would they let us know, or keep it secret to avoid a panic? Could we detect a Breakthrough Starshot fleet coming our way? And how well does China communicate its space exploration to the public?
00:00 Start
00:37 Would they tell us about the end of the world?
03:05 Is the Solar System normal?
05:38 Could we detect Breakthrough Starshots?
08:46 How well does China communicate to the public?
11:15 Could we use space junk for 3D printing?
14:02 What do I suggest for aspiring astrophysicists?
17:11 Will there ever be another Grand Tour?
19:47 What determines a planet's orbit?
22:08 Will Blue Origin pick up the pace?
25:02 What if aliens were pure energy?
28:14 Should there be more dark matter inside planets?
29:39 Would alien life be multicellular?
Want to be part of the questions show? Ask a short question on any video on my channel. I gather a bunch up each week and answer them here.
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You are free to use my work for any purpose you like, just mention me as the source and link back to this video. - Наука та технологія
One of the best space related questions/answers program I know
I love your personality and the way you articulate your words!
Agreed!
It must be a bald guy thing. Patrick Stewart has good articulation too.
Hi Fraser, love your show man, thanks for all your time and effort! I would love to hear your take on the Electric Universe!
Hey Fraser. Great channel! My question is, how far up the atmosphere can bacteria be found? If it is high enough can it seep out into space?
Around 50km the idea of them escaping is interesting. I believe they would have to reach escape velocity and would probably die if some sort of particles hit them to give them that kinda acceleration. We are sucking in hundreds of tons of dust a day so I would think the microbes come down eventually. Would love to hear Fraser comment on this one.
I am missing the live q&a shows at the moment. I usually turn on reminders and then watch them the following morning by following the reminder notification (time zones mean I can't usually make them when they are live), but for some reason I've not seen the posts for the last couple of q&as to be able to turn reminders on (probably a youtube thing). Hope they start appearing again soon cos I love watching the full hour+ version 🙂
Hi Fraser,
I hope you enjoy your hiatus.
One last question before you go.
For the advancement of our understanding of our solar system and the universe, can't we send multiple missions to Titan, Enceladus, Europa as well as Venus and Mars. It's not like money is a rare earth elements, it's just printed by us in buildings, so why let that be a limiting factor? Let's go and explore, create more jobs, more scientific and technological discoveries and stop procrastinating. 😊
Your doing great work Fraiser
Fascinating 🖖🏼
I appreciate your channel & content.
God Bless you and your family. Take care.
JLR
Will you try to get an interview with Mercury 13 member Wally Funk after her trip to space with Jeff Bezos? Would seem like an amazing potential guest.
Thank you Fraser
Thanks
Three questions
1) What would happen if two black holes meet?
2) What would happen if two white holes meet?
3) What would happen if a white hole and a black hole meet?
I should not have strayed from your channel.
Hey Fraser i have an odd Elon Musk themed question if you have the time.
Is there anything besides essentially good faith between parties stopping Elon Musk from essentially claiming mars after establishing a presence there?
The thought came to me that he has holdings in the majority of necessary industries to establish a colony in-house with minimal outsourcing. A rocket company with a solid track record and heavy lift capacity outstripping anyone else and could be refueled on mars with isru, electric vehicle manufacturing, tunnel boring, solar panel manufacturing, perseverance has proven oxygen can be efficiently separated from the martian atmosphere. I am sure he has his hand in a business for nearly every major thing needed.. so theoretically what is there to stop him if in 10 years he decided to launch off 25 starships back to back worth of colonizing equipment and staking a claim to mars upon arrival?
Given earth's precedent, absolutely nothing.
Until his Mars colony is totally self sufficient, without the need for any support from Earth, Elon (or anyone else) is going to have to "play nice" with Earth based governments.
@@donsample1002 "Until"
Friendly One
Even after. A totally self sufficient Mars colony is still going to want to trade with Earth, and even if it doesn't, they won't want to piss any nation state on Earth off so much that they decide to drop a big rock on them.
Now there's a thought!
If a laser array for Breakthrough Starshot is ever built, couldn't it also be used to target space junk at such an angle to slow it down so it decelerates and burns up in the atmosphere? Or accelerate it to change orbit in a way that it crashes into the Earth on its way back and, again, burns up on re-entry?
Fraser, you should do a video about the BepiColombo project, meant to explore the planet Mercury in 2025. Is this going to be the next New Horizons in terms of breakthrough discoveries?
Hi, Fraser. You mentioned that you are excited about the two new Venus missions. However, would you have preferred to see the missions to Io or Neptune instead?
For me personally, i'd prefer not knowing the exact date of the End of the World.
If it happens, then let it be a surprise.
I'd want to know. Be able to not have to keep worrying about paying bills up until the blastwave, take some time to sit down and relax and not care about rich guys and politicians, even for a month's notice, would be such a boon.
Interesting. I always thought the _only_ thing that determined a planet's orbit around its star was simply its speed. The faster its velocity, the further out it would orbit; The slower its velocity, the closer in it would orbit. But I have no formal education, that's just the way my logical -- albeit clearly very simple -- mind always assumed it worked.
I'd always heard that a body's orbit could be "perturbed" or changed by "gravitational interaction" with other bodies of course. But I always thought that was just a fancy, scientific way of saying _"the big floating rocks got close enough to change each other's speeds."_
I guess there's more to it that I don't understand.
Question: lots of effort is going into trying to find if there is any life not from earth. What evidence would there need to be for scientists to accept that No is the answer.
Seems odd to be be searching for a yes/no answer when theres no criteria for No to be an accepted answer.
It is more that no alien life does not exist is considered the default answer. We'll never get anything other than a no it is not possible until alien life is standing in Downtown New York shaking tentacles with people. And even then, unless it is so big and long term that it cannot be ignored, our political lords and masters will call it a hoax and we'll fall for that dismissal. Too many people are all in on making fun of the possibilities of life existing for any answer but no to be allowed.
Can you explain the black hole hologram theory? I'm very interested but just don't understand. Thank you.
@Fraser I wonder about your comment that we would see the starshot laser. Given we orbit a sun moving rapidly around the galaxy and alpha centauri is also moving, Centaureans would have to point the laser at where earth would be some time in the future when the probes would arrive. Not to mention the probes may not be travelling in a straight line (gravity, etc.). So the laser would be pointed where we aren't. If the laser happened to go through a cloud or dust that might luminesce, we might see that. Doesnt that make sense?
Maybe build an Earth ship at the new property? Lots of thermal mass to keep the temperature constant. Maybe a hobbit house :-)
Waking up with a coffee, listening to spacetalk, cool
Hi Fraser, if we are looking at exoplanet atmospheres and alien civilizations, what would we look for in their atmosphere to show unnatural alien presence?
With the detecting starshot style lasers accelerating spaceships towards us I wonder if the relative movements of stars within the milky way would mean the spaceships would have to be shot off on a trajectory that essentially leads where earth currently is, so woupdn't we miss the laser pulse?
Question: What generation star is our Sun and is it possible to have star systems where maybe only iron is the heaviest naturally occurring element? And on the other end, star systems where heavier than U92 elements occur "naturally" on planets?
Thank you for all the work and science information!
Want to know about recycling space junk? Watch Codyslab’s videos on extracting the gold from computer boards
That's awesome. Did you see my interview with Cody here on the channel?
nice long video
Hey Frazier. What are some of the reasonings out there for what caused Uranus to be sideways? Was this the same event that switched the two planets
if money was no object could we do breakthrough starshot now or at least as long as as it takes to build. does any part of it require technology we have not invented yet? my guess is perhaps a light high speed camera to start
If we digitize ourselves, we won't beam ourselves to other star systems. We will beam information fro other star systems to us so we could recreate them in our virtual reality. It makes no sense to physically move where our our digital information is processed. Information about the outside world would come from sensor, and it doesn't matter if those sensors were processing real information or simulated information. It's all be the same to us.
Hi Fraser! Will UN271 be visible with my backyard telescope? How long will it be in the inner solar system for observation? Is there a website to show how to find it in the night sky?
Thanks for your insight! This Q&A session is greatly appreciated!
It'll be increasingly visible up until impact. You'll have plenty of time to admire it, not that NASA will tell you that until the very last minute though. They'll keep on telling you impact advisories are wrong, and fringe science, and they've calculated it passing harmlessly. We're at the predicting it coming nowhere near us stage right now, having spent a long time pretending it hasn't existed at all stage until non-NASA watchers were able to definitively find it, but watch what governments and rich guys are doing regarding moving stuff off planet to get the real skinny.
25:05 I wonder if bombarding matter with a coherent stream of energy during astronomical periods of time (increasing its entropy) would cause it to organize itself into a more informationally coherent arrangement ? EDIT: Also, a Starshot wouldn't be directed at us when launched. It'd be directed at the place the solar system is going to be at the time of arrival. I think. ^_^
Fraser, was the CMB ever visible? If we were at 1 million years after the big bang, would we see some dim glow everyplace in the sky? Or was it always at a wavelength below the visible spectrum?
Sure, at the beginning of the Universe, it would look like a dull red glow in all directions.
👍👍👍
New comet/dwarf planet coming, expected to graze Saturn's family of moons & rings, will intercept Jupiter's orbit, about 2031. Sounds like it should be our next Big Project.
How much information will Spacex release to the public? Are they/will they be as good as NASA?
Hey Fraser
when starship flights become common and cheap, what's the feasibility of giving Hubble an upgrade?
and more - when Hubble dies, can someone fix it and take control of it?
Hubble could be fixed and upgraded right now, before the end of the year, for a cost of a lot less than even a single F35b fighter jet. Just NASA refuses to buy a new truck, because it prefers taking an uber. NASA needs a truck more than it needs a taxi cab system, and should build a new shuttle orbiter instead of relying on SpaceX.
@@crypticmirror there is no reason to build a truck if you can rent from uHaul, especially if the truck cost so much that you can do dozens of productive projects for the same price - you don't but a truck to move your house when you need, so why should they? they should focus on the edge, not the mundane
Hi Fraser.
Could planet 9 be an interstellar object? I was listening about the new comet of 3M yers orbit and thought. Could all those evidence of the 9th planet be caused by something massive passing throught the solar system, or that the 9th planet was the 1 kicked away?
That minor planet/comet thats inbound to saturns orbit (newly discovered) might have similar astreoids in a orbits around it on a orbit similar to its orbit around the sun . Meaning on 0.999999 orbit somewere very far were the comet (minor plant) is now. I t also could have several smaller bodies around it very close that might detach from it when it comes closer
Sorry, Fraser, but the idea of a Fusion drive as a means of propulsion is not scientifically plausible. I've explained the 'hows' in detail elsewhere, so in short, the ONLY kind of propulsion effect a fusion drive would be able to generate is from radiation pressure. Now compare that to the sun, which is capable of a LOT more fusion than any engine we could ever make and consider how little propulsions we can gain from the radiative pressure from the sun. No, I'm genuinely sorry to say this, but the ONLY use for a fission/ fusion or anti-matter device on a star ship is as a generator for energy and NOT as a means of propulsions. It would make far more sense to use a fusion generator to generate the energy needed to operate a plasma drive/ plasma engine. As I've said elsewhere, in a vacuum, fission/ fusion/ antimatter don't create 'explosions.' They only create an enormous release of energy, expressed as light, heat and radiation. And since there's no atmospheric medium in a vacuum, the heat from an atomic 'explosion' doesn't travel far at all.
Now that we have Perseverance on Mars, do we still need Curiosity? Wasn't Curiosity's mission to determine if ancient Mars might have been conducive to life? It's answered that question. Now, Perseverance will try to answer the next question: Is there evidence of ancient life? Curiosity has done a great job. But might the money we are spending to keep it going be better spent exploring, say, Venus or Europa?
The rover is on Mars and fully operational. Its still has plenty of science to do. Are you suggesting they just turn it off?
"If aliens were on their deceleration burn with their fusion drives" I think you assume they're invading and not just throwing a few relativistic rocks into our planet. If you have a large rock with a big fusion drive pushing it for ages, you can't see the fusion burn since the rock is in the way, the rock's relativistic speed makes it impossible to detect until its too late. Then all you have to invade later is a crater after it's cooled down.
You wouldn't need to push an asteroid across stars to punch a hole on Earth's crust. For an infinitesimal fraction of the energy you could send a small ship to rendezvous with some local NEO and give it a little push and it would be over. We would never find out it was done on purpose.
@@DamianReloaded Same difference, alien invasion stories are pretty silly when you think about it. If they want to get rid of us without destroying the ecosystem, it would probably be done biologically or chemically instead of a stand-up fight like in the movies.
@@Meph648 Life always has a way to surprise. It could happen that an advanced civilization collapses and a medieval one finds itself in posession of their technology and embarks itself into the conquest of the galaxy with a barbarian/ignorant mentality ^_^
00:37, like i wrote in my "The Fallen Star" Novel, They wouldn't tell the public until the world governments had a complete evacuation plan, and Space ARK already built ready to board. That way the public or fanatics couldn't sabotage it.
I think you're wrong, Fraser, in your assertion that SpaceX "running away with it" is a _bad_ thing. Yes, competition is good to be sure. But in the 1950's and early 60's, the soviets were pretty clearly "running away with it". And what was the net effect of that? It was NASA getting their ass in gear, really putting themselves out there, taking significant (if calculated) risks that they otherwise wouldn't have (such as Apollo 8's mission) and catching up and overtaking the competition.
When someone else was running away with it, NASA went from launching their very first satellite to driving a car on the moon in barely a decade. Once the motivating fear of having their butts kicked was gone, they spent 40 years messing around with a spacecraft that was -- from inception to retirement -- an abject failure in its primary mission (the creation of cheap and frequent launch capabilities) and took the lives of more astronauts than every human space vehicle in history combined (even if it did get some very good science done along the way).
So personally, I think as long as the _reason_ SpaceX is running away with it is simply because they're focused on legitimately progressing their industry much faster than anyone else, and not because they're doing underhanded things to specifically damage and eliminate their competition, then it's perfectly fine. The free market will do what it does, and science and space-lovers alike will benefit from it.
NASA was in a race with the Soviets. As soon as the Soviets conceded, NASA stopped hustling. The same thing will happen with SpaceX. As soon as their lead is overwhelming, they'll get complacent. We need vigorous competition from many groups.
Supposedly there are trillions of objects in the Oort Cloud, totaling up to 5 earth masses. Maybe I’m off base here, but it feels like that latter number should be higher? Is the earth just really big, or are these objects just really small?
I hear a lot of people talk about digitizing life and humans, here as well again, but I am not sure if that will prove to be even possible. We have yet to even adequately detect whether something is self aware or sentient besides own selves. (although I presume that you are) Any type of transmission of the code of life involves disassembling and temporarily killing the life to be transported and then reconstituting it somewhere else. I am not so certain that will be possible at this point. You indicate you are rather certain that this merger with machines will be possible, I am not, though acknowledge that it may be possible. I tend to believe that there it a difference between a sentient being and a machine that acts and responds as though it is, but again, I could be wrong. I realize that we have a full spectrum of life that we can study from humans down to single cell organisms, but we still have yet to figure out where sentience comes from. We can fiddle with peoples minds and take parts away, so it does appear to be a sum of parts to me, but whether we can build that into a machine, much less transfer such from one machine to another and call it the same life seems questionable at present.
Any physics degree will give you a good job, but probably not in astrophysics.
Fraser, could a dragon capsule mission service Hubble?
If you were to be digitized, the receivers could be deployed to different worlds via traditional methods. So what if it took centuries or millenia for the physical receivers to arrive at their destination? You are an electronic being and time has little or no meaning any more.
I don't put much stock in the Rare Earth Hypothesis, it's just a modern iteration of the same old 'Humanity is so special' refrain that's been going on for thousands of years. To claim we have any clue at all what the ratio of single cell to multicellular life is in the universe, is just absurd, sorry. But here's what I think might be rare: scientifically advanced, technological, industrial civilizations like ours. This high-tech science based civilization only really got going around 150 years ago. That's a blink of an eye in human history. It didn't have to happen, and it wasn't at all inevitable. The Milky Way could be filled with complex civilizations who just never got around to embarking on an Industrial Revolution, or didn't see any need for it. Remember, steam power was already known in the Ancient Greek world, thousands of years ago. They just weren't interested.
dear fraser, i love space always have. am i wasting my life not going to university etc. what with kids and having to provide is this just a life a have to accept is not one of study now?
You can always take a few classes at a nearby college or university. They love mature students. I finished off my computer science degree when my kids were little and I was running UT. So it's definitely possible.
Is our Earth's magnetic field due to churning of inner core? Will the Earth's magnetic field be retained if we cut our earth into two hemispheres (Assume there is a way to cut our earth into two halfs)
Fact - Any magnet when cut into 2 pieces will crete two new magnets. Will this fact hold true
You speaking of space probes coming towards us rinds me of this great song by Spock's Beard: Somthing Very Strange. Check it out.
What's the deal with the huge comet they discovered in the ort cloud that's supposed to reach the orbit of Saturn?
its a minor planet sized thou or it could be the first armada from alpha centauri
Did someone say inbound minor planet?
Anton talks about it in WhatDaMath
re - Apophis
There's this really crappy, really SHORT game that I really like, called RAGE. The intro shows a world preparing for impact with Apophis and the game proper occurs in a post-Apophaliptic (ie: post apocalypse + post Apophis) world. Since I really like this game, I think it would be really nice if any of it came true. So I'd be really interested in knowing; Is there anything we can do to actually INCREASE the chances of Apophis hitting Earth in (I think) 2036?
Just like it's faster to transfer mass amounts of data by loading an 18-wheeler full of hard drives. (Amazon provides this physical data transmission service.)…
…It will be easier for a mass migration of digital minds by moving a small probe full of data storage, instead of a laser beam. But the concept is largely unchanged.
If the world was coming to an end I do not need to know it. I wold rather the people running things did everything possible to stop it.
Cant spacejunk be collected with giant magnets ?
SpaceX compete with itself
No, they're competing with Boeing, ULA, Blue Origin, Arianespace, Russia, China, Japan, etc. Falcon 9 is a serious competition in that space. But if Starship works, there'll be no competition that can stand a chance against them. Monopolies are always abusive.
@@frasercain Unfortunatelly we don't see the SLS ready to become reusable anytime soon.
@@frasercain Only Russia and China have the right idea. Space Exploration should be done by state actors only, it is too important to be left to the private sector. Leaving things to the private sector is how we've ended up with NASA having take ubers to space instead of owning their own truck. It is why we can't fix Hubble, we've no repair truck to take someone up to it no more.
I hope they dont tell us .
It is beter tot die unespected then tot know for days or weeks that death will come .
I see it as a negatieve Jackpot , better not tot know when it comes .
People who knows it will have a verry long hard time tot accept it .
Resistance is futile...
If a huge asteroid was speeding towards Earth,
do you really think that Bruce Willis would tell you about it?🤔
Really? You find *that* a compelling and interesting answer to the Fermi paradox? The whole point of the Fermi paradox is that it doesn't matter if the vast majority of spacefaring civilisations *don't* end up producing galaxy-eating waves of von neumann probes, you only need one (which apparently should already have happened), and they're everywhere. All the "uploaded consciousness" argument adds is one more in an already very long list of possible outcomes for life that don't lead to intergalactic grey goo. If the Fermi paradox was ever an interesting thought experiment, adding that possibility doesn't seem like it changes anything at all.
That said, I'm starting to suspect that Fraser is trolling because he's fed up answering questions about life on other planets.
Too bad Elon didn’t make the ride on Blue Origin
Are you asking about meteors or perhaps something else. The end of your world view.
I was talking about natural disasters, but even an alien invasion would be argued over. Check out the second book in the 3 Body Problem series. It deals with this idea so well.
I can't wait to be proven wrong about UFOs. Can't... Wait...
@@frasercain hehe, lies. Not to brag, just as a matter of pertinent fact, I'm easily smart enough to read your psychology on the matter. You aren't taking a rational position, it's obtuseness in the name of science. And it doesn't work that way even though many have tried before. A rational assessment of the situation easily concludes in favor of the ET hypothesis. And I say hypothesis merely as a matter of form. It's not a hypothesis, it's a certainty. When even Obama says it's real and Trump in an interview is giddily holding back, it's more than time to think. I'm not far from your age so I know we have been an information society long enough that you have been exposed to decisive evidence for over 30 years. Discovery channel has brought you cases since the 90s with plenty of opportunity to follow up if you were rational and you obviously are interested in the domain. So it can only be a strict sheepish adherence to what you are implicitly allowed to believe in. A less overwhelming example of 'science' obtuseness is ball lightning that also has oceans of observations in living memory and has a form that known physics can't explain. Yet the 'scientific' community is afraid of it like it's a witch. Never mind that it obviously demonstrates new physics and it's right there for the taking.
I'm also smart enough to know that you are smart enough that part of you has reached the conclusion that it's much too information rich and consistent for UFOs as in ET ships not to be real. Part of you know it's very real but somehow you just can't bring yourself to think about it. It's a curious thing. Part of you also know that Mick West made an exceedingly dumb argument that David Fravor and the 3 other pilots confused an F18 for a white tictac craft doing exotic things but you don't want to face that. You don't learn from it. You don't face the obtuseness. The guy you brought in to make you feel better about your obtuseness made a monumentally dumb argument and you let it slide. When I try to hold you accountable you just lie and say can't. wait.
Nobody's afraid of it. They're just unconvinced. If convincing evidence shows up, they'll be convinced.
@@frasercain so you stand by Mick West's sage debunking of the tictac as just a misidentified F18? those poor pilots got confused and bastion of reason Mick West saved them from their mistake.
I’ve always wondered about this and I don’t think they would. It makes me wonder why the government is spending trillions on space program s and Mars.
Look up the 5 million year history of earth's average temp. IF we warm up, we will be very lucky. For 2.5 million years, we were constantly warm; life thrived. Then we started yo-yoing in and out of ice ages, never returned to our previous warm stability, although we started to two ice ages ago. Now, going by the pattern established in the last 2.5 million years, we are due to plummet into another murderous ice age: 5 million year temp history en.wikipedia.org/wiki/Global_temperature_record , go to last graph on the bottom of this page.
Why, for the last 25 years, has the government pushed paying for research with "global warming" in the title? Mocked the fact the last warm period was called the medieval optimum and associated with great harvests? Acting like our Co2-starved plants are unimportant, and pushing CO2 is the ultimate greenhouse gas, ignoring the 95+% effect of water?
Consider today's question. Are we being lied to?
I love your channel 🕊️
Why should they? We are in no manner important or essential for the universe.
Yeah right in the middle of it happening 😂they gone say well folks looks like this is the end hug ya neighbors n say neighbor I love u the time has come to go home 🙄 they wouldn't dare WARN is🙄nooooooo it'll create a "PANIC" BS🙄 y'all better be already be ready bc if you not that's on you!!
*Do you see anyone speading the message?*
The world will be fine.
We're not going to be here.
*OUR WORLD IS KILLING US!*
michio kaku 😂
Q&A.
Hi Mr.C, are you going to devout an episode to Chinese rover landing on Mars and a new space station?
The fusion alien's would have cloaking devices obviously.
To aspiring astrophysicists, "it's gonna be very expensive to get a Phd..." in the USA, not the entire world.
Global warming should make Canada more tropical....yay
You have waaay too much trust in NASA