Q&A 153: How High Can Bacteria Survive? And More...
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- čas přidán 26. 06. 2024
- In the season finale of my questions show, I talk about high-altitude bacteria, traveling into the future, does it make sense to go back to University, and more. See you all in September!
00:00 Start
01:10 How high an altitude can bacteria survive?
04:02 Should I go back to university?
06:29 Could we terraform Venus with comets?
08:49 Could we detect life in Andromeda?
11:04 Could aliens perceive time differently?
13:01 Why do spacecraft use such old hardware?
15:20 What do I think about the billionaire space race?
17:16 How many satellites can we see?
19:31 Would I cryosleep into the future?
20:30 Should we only build smaller space telescopes?
24:40 Did we used to have better knowledge of the cosmos?
27:10 How would life be different close to a black hole?
29:22 Is there a business model for Starship?
31:23 Am I disappointed Trident wasn't chosen by NASA?
33:19 Are we the generation to find life beyond Earth?
34:25 How much better will LIGO get?
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. - Věda a technologie
Noooooo, what I'm going to watch until september?, I need these weekly
Your dog sounds REALLY EXCITED about those LIGO upgrades..
:)
Let's goo! I'm ready!!
Back to green screens with nature backgrounds! 😁🙃😎👍
Would bacteria survive an interaction with a comet at that velocity? Bug on the windshield is probably more literal than you think.
Wouldn't the bow shock's plasma field turn anything living (or any molecule for that matter) into plasma?
Congratulations on the move and new property. I hope your build out goes well and to plan.
Such joy. I will miss you.
The "Should I go back to University?' pep talk got me to subscribe. That was brilliant advice for many including myself.
love the q and a vids
One of favourite channels on CZcams, always looking forward to new content!
Great episode
Hey fraser Welcome back we miss you,i just wanted to ask you to keep the raw version of the lives i wanna watch the unedited version if you wouldnt mind
Now my sense of time has really taken a hit with no fixed points on Mondays, Wednesdays and Fridays :-)
Hi Fraser, hope your hiatus was wonderful! I have a question for the next question show. I went out & watched the perseid meteors last month and saw a really bright one that arced through about 40° of the sky, created a green glow around the main streak of light, and even made a faint noise (a sizzly whoosh). Is there a way to estimate how big the meteor was based on how long the streak of light is, or any other factors?
I'm already going through withdrawals. Have a great summer Fraser!
Hi Fraser, My question is about the 2022 planetary decadal survey what are your predictions for the chosen solar system targets like Venus or the ice giants, which destination will get prioritized in the next decadal survey?
Thanks.
I have same question too. But I think they will choose the ice giants, Enceladus and Triton in the next decade. Because there are some missions to Venus in the end of this decade
Question: what is some of the history, arguments and developments of the discovery of planet sling shots for satellites???? ( whatever is more interesting for you) Thanks
Perseverance and Curiosity both use the same processor: BAE RAD750, and they were built about a decade apart.. While some cube sats (including Marco and Polo, which accompanied Perseverance) use relatively new off the shelf processors, most do not. The biggest reasons are radiation hardening and validated reliability. As such, many satellites and probes use processors that are 5+ years old.
The newest processors are more likely to have issues in space due to the reduced transistor size, which makes them more prone to radiation interference and damage. Hardening can help, but adds weight, and isn’t a guarantee.
Carbon is an insanely useful material. You can use it to feed farms, make plastics, graphene, carbon nanotubes, and more.
If we have enough industrial capacity off the Earth's surface to block the sunlight to Venus, then we are close to needed capacity to have industrial scale use for every ounce of carbon on Venus.
We *could* lock away the carbon chemically. But, in my personal opinion it's more advantageous to cool the CO2 down to a liquid. (With the mirrors you mentioned) Then package it up, and ship to elsewhere in our solar system.
Is the Earth's rotation speeding up, slowing down or holding steady? What about all the other planets in our solar system?
The earth is very gradually slowing down, because of tides caused by the moon. It is very slow though. The sun will grow into a red giant before the earth is tidally locked to the moon.
Depends year to year. Tides are slowing the Earth. But changes in mass distribution can speed up the Earth.
Hey Fraser! Great episode. Do you think it's possible that a plant/humanoid species could somehow develop and evolve? Where they would rely on natural energy (Sun) as a resource like we do food and evolve in crazy ways we could never even imagine?
Hope u r having a great 'break' Fraser. Can u please interview JMG next season ?
If we were able to build a telescope about 150km across, we could be able to resolve large surface details on proxima B. We've built interferometers in infrared, could we build one strong enough to resolve proxima b?
Good video like always. sorry haven't been watching as many videos as normal, CZcams not recommending like they use to. Well hope you enjoy your time off. Well have a question- let say a random guy or group of friends want to build a "small" amateur rocket with some type of satellite/telescope in there garage. Assuming they where smart enough to make one that didn't blow up and could actually make it to space. Would they actually be allowed to lunch it and operate it without getting into trouble? Would they have to contact NASA or mybe the FAA or something to make sure it doesn't affect things already in space?
Hi Fraser, why does gravitational waves travel at speed of light? I would think it would be slower due to space-time resistance during travel!
Question.. What’s your thoughts on Mars radiation and the “nuclear war “ speculation? Thanks 🙏 Dave.
What do you think about the Cyrusher electric mountain bike?
Say we in-cased the sun In a complete dyson swarm getting close to 100% of its energy. Would that cause Any damage to the rest of the Planets in our solar system? Not including earth of course.
Question. How are neutron stars detected? Are all neutron stars also pulsars? Could a nearby neutron star easier be detected by the gravitational influence rather then the ligth it emit?
Hey Fraser. I hope all is going well
do you know of any projects that are like a mix of ligo and lisa? LISA seems very far off and it ocurred to me that u could maybe have two or three satellites in geosynchronous orbit orthogonal to a detector on earth. if one could correct for changes in atmosphere preasure that would seem more viable today and cheaper. maybe the noise would be mitigated by the much greater distance of a geosynchronous orbit to the arm length of LISA
Hi so I recently was thinking about the observer effect where outcomes can differ based on an experiment being observed, specifically on the quantum level. This started to remind me of how video games only render what the player sees at the moment to save on processing power. I was wondering if this could be evidence of being in a simulation? Thanks!
After COVID-19, it's always forward in time.
Which is more important in evolution of a planet. Active volcano or water?
question.if you travel faster than the speed of sound and keep travelling faster Let's say circling the globe. could you catch up to your own sound?
We should put up a satellite to scoop some up. It can return via Piedmont, New Mexico.
About the civilizations living near black holes, wouldn't they actually live for less time, since for them the universe around would speed up and increase in entropy faster?
Speaking of time dilation; if gravity wells slow you down for outside observers, would the theorized "negative matter" described in Alcubierre's warp drive speed you up for the outside observers?
Fraser question: According to cosmologists, the universe is expanding at about 70km/s / mpc. However, this expansion is not measurable anywhere on earth or in the solar system.
How far must two small objects (tennis ball) be from each other before this is actually is measurable. And if I tie a very thin string between the items, how strong must that string be to prevent the items from pulling apart?
Hi Fraser does a white dwarf lose its gravitational pull when it dies? Just a random thought.
What happens to the exhaled air when astronauts are in EVA suits? Does it stay in the suit or is it expelled from the suit, which would provide thrust in zero-G?
will we know for sure that there is or isnt life in the universe, once luvoir gets launched? also, why is it taking so long
Could we detect if the earth’s core was cooling? How would that be measured and how minimal would those changes be year to year?
We can measure heat transfer - all coming out and none coming in
Hi, Fraser. The Starship for moon landing would be back to Earth? Or is better to just use in space all the time after leaving Earth and use other Starship or capsule to transfer the crew?
The Lunar Lander version of Starship will never return to Earth
I think you really missed the point on the Starship question. Those ultra-low prices Spacex is predicting rely on economies of scale and will not even be possible unless demand for space launch increases.
But isn’t this the same with any new market? Thomas Watson of IBM once said the global market for computers was 5 machines. Until volume price points are hit you just don’t know what new uses and opportunities will drive volume higher. Moving the worlds broadband infrastructure to space would seem a good opportunity. Starlink alone is 40k satellites when fully built out. The good thing for SpaceX is that these Starship rockets are being built on the cheap. Even if fully disposable they will probably be cheaper than a even small launch vehicles from competitors.
@@byrnemeister2008 I agree that the space launch market has the potential to grow massively from new, more cost-sensitive applications, but I don't think that current demand for satellite launch, even including Starlink, is enough to make Starship economically viable. This is my main issue with Fraser's answer. It sounds like he's saying that Spacex can reach the advertised price even without an increase in demand.
But here's the problem: New applications for space won't be funded until the launch cost is lower, but the launch cost can't decrease until we are already launching a lot more. It's a catch-22. If Spacex can get the price low enough, and keep it there for long enough, new users will come. The question is whether they will go bankrupt in the process.
I'm cautiously optimistic about Starship. I really want Spacex to succeed, but I think it's prudent for us to think of ways they might fail, so as not to get our hopes up too soon.
Check out my playlist of videos of Jeff Greason talking about this very topic:
czcams.com/video/Wy2kIPLsUn0/video.html
Fraser one question , thinking about the big bang , is there a possibility that the outer part of universe(matter ) boundary is dark matter .If this is true , could it mean that matter is permeating into dark matter .
Oh noooo. The hiatus is upon us!!!!
👍👍👍
Question - when they say that the universe is infinite, and that all things within the laws of physics are possible (including multiple repluca earths etc. Do they mean our universe (which is only 13 billion years old, which sounds pretty finite to me or are they talking about the infinite multiverse?
Question: Hi Fraser. As you said in your newsletter, Musk thinks that, despite NASA signalling delays, he can still get astraniughts to the moon before 2024 and this got me thinking.
There is obviously going to be a lot of worry surrounding the skydiving flip maneuver suicide burn hover slam that the starship will have to do in order to safely return humans. From the moon.
Do you think it would be viable for the short term to put an international docking port on the lunar starship, and use a safe and proven crew dragon to complete the return part of the mission? Then "all" SpaceX has to do is get the astronauts to the moon, then back to LEO without worrying about the reentry phase.
Would love to hear your thoughts on this, or other possible solutions.
Could Starship get a payload into orbit without the Superheavy booster if the payload was also a second stage of sorts?
Thought you might get a kick out of how "Curiosity Might Not Be In An Ancient Lake At All" reads when the HTML is rendered as text:
"Scientists thought Gale crater was an old lakebed, and it was specifically chosen as a landing site to …" So I thought the entrance was in that mysterious sinkhole in Russia, but it turns out it's actually on Mars.
Hey would you know the wieght of black holes
🤘🤘🤘
Space Telescope on International Space Station?
Question: Is there a reason why we don't mount fairly inexpensive and maintainable telescopes on the ISS.
@Smee Self I should have said less expensive as all you should need the telescope. With it mounted to the ISS, none of satellite is needed, i.e. thrusters, gyros, power supply, comm gear. Additionally, any maintenance/repairs needed can be done by ISS crew. Just seems like an ideal platform to place a large array of star gazing instruments outside our atmosphere.
Does the earth spinning counter gravity? And if so what would gravity be if earth stopped spinning?
Yes. At the equator, the your effective weight is reduced by 0.3% by Earth's rotation. So it's real and measurable, but really not a big deal.
Could Mercury have previously been a hot jupiter?
My question. Who owns that pair of ears down at your right at 0:38?
That's Ona, our bull terrier. Ironically, the ears are useless, since she's deaf.
@@frasercain but still pointed up as if he were paying attention. Lovely
Are there any microbes or bacteria that could survive on mars as is?
Did we *use* to, please
Idk how you choose your questions, but I stopped posting mine about a year and a half ago 😑
I am sure that the Extraterrestrials even experience time reversal and get younger during their interstellar trips.
UT after their break:
''Will Starship ever go to Mars? (or just keep goin into the moon.. AGAIN)''
*I think a different vessel, built on THE MOON, will be the one going to Mars..
I don't think so
They'll never run out of things to launch. If it's cheap enough, somebody will figure out how to use it and make money at it.
Question: we are constantly told the universe are infinite, we are also told the universe was created some 13,7 billion years ago, from some single point?
But, if the universe are infinite, it must contain an infinite amount of mass, and all this infinite mass must all have come from that single point?
But, and this is the question, then that single point must also have been infinite, how can it expand if it is infinite?
This is a misunderstanding because of poor descriptions.
The observable Universe would have fit in to that single point.
But if the Universe is infinite then it would have began infinite.
I recommend Max Tegmarks book, The Mathematical Universe has an excellent description of the Big Bang in it.
@@kadourimdou43 - "...Observers, including humans, are "self-aware substructures (SASs)". In any mathematical structure complex enough to contain such substructures..." yes, probably excellent, but far above my intellect, sorry, and, matematical structure!? What!?
@@doncarlodivargas5497 Take a look at the book.
@@doncarlodivargas5497 have u heard the dr neil turok episode on event horizon ? if not, u will enjoy it
tldr: mirror-verse! 🖖
@@cryptolicious3738 - ok, but infinite is infinite, how do you get around the concept of something infinite? It's infinite?
How does an eclipse look like from space?
Fraser, you're contradicting yourself. Re: living close to a black hole. If, like in Interstellar, you see the universe racing towards it's end from near a black hole, then it mean your civilization wont have as long to live and develop. They wont have longer to exist, like you implied. Although they would be able to see more of the full life of the universe, if their civilization has a limited life span.
i don't know ... i put a frozen dinner in the microwave the other day (i never cut a slit in t cellophane) and my dinner was perfectly well done... only to find a fruit fly walking around inside the micro wave as if nothing happened .. so i took out the dinner, left the fruit fly in there and gave em another minute ... HE SURVIVED ! ... and flew out WTF !
Come back Fraser!
The Colorado School of Mines is starting a graduate degree in space resources; a company called Trans-Astra planes to launch an optical mining satellite which will capture astroids ranging in size from a beach ball to a tennis court. With all these advances in space launches, the decrease in the cost of those launches, and what Elon Musk is doing would you like to amend your estimate on when space mining will happen?
I wonder if the curiosity in its Mars mission has ever found any RNA trace on an asteroid ?
Don't go Fraser we need you
If you were in an empty room in the center of a planet would you be weightless or crushed by the invisible force of gravity?
Gtavity doesn "crush" you. It can accelerate you and perhaps slam you against a physical object, but in an empty room you have no reason to get crushed.
Can a star be a moon?
@Smee Self I was thinking if a star could orbit a rocky/gas planet, i.e. small star orbit a huge planet.
It’s been a month no new videos 😌
Summer isn't over yet.
@@frasercain How dare you enjoy your vacation!
Will Jupiter tarraform after be nuked by a nuke
Billionaires could live large in cloud cities on Venus.
I'd prefer they would go to the surface and stay there.
Maybe they could, but why would they?
@@user-pk9qo1gd6r so that there would be a good chance of things going wrong.
@@user-pk9qo1gd6r Ever see "The Jetsons"?
Soon you will be able to speak with John Cena in Chinese.
I don't think it's a fair comparison to lump Elon Musk into the same group as Jeff Bezos and Richard Branson. Elon and his group are actually achieving something important and substantive, while the other two are building carnival rides for the wealthy - bungee jumps for billionaires.
Steve
🧫 🦠 😳 😱-It's alive!!
You have seasons now? Time to unsubscribe.
That's probably for the best. I've found that taking summers off each year lets me replenish my energy and stay motivated.
@@frasercain It was meant as a joke. Like I was buying "seasons" of "Criminal Minds" and after 3 episodes the season took a break.
Shave your neck please?