Quasar Dust, Grabby Aliens and Who Needs von Neumann probes | Q&A 181
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- Опубліковано 7 сер 2024
- In this week's questions and answers show, I talk about supermassive black hole nucleosynthesis, the threat of grabby aliens and why would we ever bother building Von Neumann Probes.
00:00 Start
01:00 [Tatooine] Are elements being formed in quasars?
03:50 [Corusant] What will the coverage of the Moon landings be like?
06:39 [Hoth] How close will Comet C/2014 UN271 get to us?
08:29 [Naboo] Why send out Von Neumann Probes?
09:56 [Kamino] Will we actually develop the technology for Von Neumann Probes?
12:34 [Bespin] Why do colliding black holes turn mass into gravitational waves?
13:56 [Mustafar] Should we broadcast signals into space?
18:05 [Alderaan] Would bowl-spin habitats help with lower gravity?
21:07 [Dagobah] What will the first pictures from Webb be?
22:31 [Yarvin] How do we know the Oort Cloud exists?
23:31 [Mandalore] What telescopes can fly with Starship?
26:46 [Geonosis] Could a heavy suit mimic Earth gravity?
28:41 [Corellia] Why do people want to colonize other planets?
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
Actually the video from Apollo was of decent quality. The stuff shown on television was bad because it was converted from a different format. This was done by pointing a television camera at a monitor with a different resolution and frame rate! At that time computers were way too slow to do the conversion in real time.
It's interesting, my father said the video footage of the moon landing was extremely clear in New Zealand. I read online, because NZ didn't have a nationally linked TV transmitter network at the time of the moon landings, the raw footage received by the Australian Deep Space Network, were duplicated, and then flown to NZ by the NZ Defense force, where it was flown around the country and basically airdropped out to the transmitter stations around the country.
Just love your shows and podcasts (astronomy cast etc), discussions, style of discussion and thought processes.
Thank you for making these, loved it, made my day, greatly appreciated.
You're on a roll, Frasier! Keep the great videos and interviews coming!
Tatooine, Mustafar and Corellia. Especially liked the answer on Corellia question.
*[Mustafar]*
Your answer was incredible. Never thought about it this way, and makes so much sense.
Great videos, keep up the good work! Please, and i think i speak for everyone, start uploading in 1440p/60
Why's that? We already upload these at 19220×1080 at 60fps progressive. Does it not also allow you to watch it at 1440x720 at 60fps progressive?
For JWST first picture: I would like to see a comparison of the Hubble deep field just as a comparison what we can see there which hubble was not able to see... much deeper in space and time.
I heard an astronaut complain that the zero gravity tank has a serious problem in that the suit seems zero gravity but the person in side the suit does not. Inside you still have one full G and have to fight against the walls of the suit. So, On the moon. I think this would be the same. Adding weight to the suit makes the suit heaver but the person in side isn't affected. It will be harder to move the suit. Both in physical endurance and balance/control. I'd bet they don't do it for that reason. But that's my guess. Maybe you would interview an astronaut at some point and ask about it.
Tatooine, never thought about that aspect of black holes.
Code: Kamino
I love that question!
The person who asked it intrigues me. Sounds like a kindred spirit, a soulmate even.
Probably a genius.
I wish I could meet them and become best friends.
But they sound super conceited so I won't bother.
Anyway, nice Q&A and thanks!
“They sound super conceited” ?
How?
@Frasier Cain I have an question.
If the James Webb Space Telescope found blackhole hairs. Could it be called an hairy blackhole?
With or without the gusset?
Yes and getting it out of my house finally made me make a homemade air purifier from a fan and a furnace filter. So that’s where it comes from!
Well, it started out as black hole dust, then it became part of your dog and trees around your house, and then turned into pet dander and tree pollen.
(Naboo) if you could hand us a book? You did😎 I love your book.
Question: There must have been a time when the radius of the Universe was smaller than the Universe's Schwarzschild radius. How is this possible?
Because there was more Universe. The actual Universe is vastly bigger than the observable Universe, and it might have even been infinite, right at the beginning. Without significant density differences, there wouldn't have been enough local material to collapse into a black hole.
Hi Fraser, a sci-fi question here. How long do you think it would take an average a person from 2022 to adopt to living in the future (let’s say, in 2122)… Taking in account time dilation, launching that person from Earth in 2022, accelerating him to some portion of the speed of light, then bringing him back to Earth where he only experienced a year per say, but on earth 100 years have past. How would that affect him psychologically and how long would it take him or her to adopt to the new technology, past history he or she skipped, etc? Thanks
Thank you Fraser for another entertaining Q&A. Tatooine was my favorite.
I notice a distinct trend towards codes from the star wars universe. is that one of your favorite?
Anton made the code words. He says he'll be tweaking them, possibly adding more from different series.
@@Drakcap Cool
Why wouldn't JWSTs next image be a long exposure in the far infrared, to demonstrate the capability of this new tool? The last public release was breathtaking enough
First question: What do you think of "tumbling pigeon" designs for spacecraft for simulating gravity? Second question: Why do we not use more photointensifier tubes for astrophotography? They aren't that expensive (less than ten thousand dollars for a good one) but the light amplification and the sensitivity wavelength range is pretty attractive.
Hi Fraser, love your show! We always hear about stars and Galaxy moving away that are red shifted but is there any that are blue shifted. That are heading towards us so fast that there light is shifted toward ultraviolet?
Not ultraviolet, but Andromeda is moving towards us, and its light is shifted into the blue.
Hey Fraser
How fast do comets vaporize when they get close to the sun?
will that big comet loose a lot of mass in that distance, or does it need to get closer?
I miss the pine trees background
Could a star system orbit two different galaxies similar to how planets orbits in a binary star system (Like P-type orbit)?
HI Fraser - I know there are many different sources of information for the work you do and that you are constantly taking notes. I, too, am a rabid note-taker and so am interested to learn what tool you use for keeping and organizing your notes. I started with my PalmPilot, switched to OneNote then Evernote, but use Bear notes. What do you use?
Hi Kathleen, it's more important to me to keep my notes in my brain, so I use a piece of software called Anki. It's a flashcard software that lets you remind yourself and keep accessible in real time. That's how I can remember all these obscure facts. Beyond that, I use Google Docs for writing stuff, but I don't actually take a lot of notes. It's either in my head in real-time, or it's forgotten. :-)
Hi Fraser. Am I the only one to question the form factor for Starship to land on the Moon or Mars? It might be able to land on a pre prepared flat landing platform on Earth but the Moon and Mars arent flat. For a landing system, it is very tall compared to the width of its base and will surely topple over on a cratered uneven Moon or Martian surface? Also, the crew egress point looks about 40 foot off the ground. If any external lift system broke down, how is the crew supposed to jump 40 foot to reach the entry point from the surface even in reduced Moon or Martian gravity?
For 3D-printing question: Though it is true that printers can't print (completely) new printers, there are countless 3D printers which use 3D-printed parts. The company prusa uses it's consumer product (MK3s) in a print farm to print almost all the plastic parts for the printers they sell. So "it" has allready started. ;)
It has, but that's also the easy part. The hard part is to print the infrastructure needed to produce the material too.
@@oaksnice I think the first step is REAL multi-material printing. In this regard we are mostly limited to "plastics" and/or metal...
Q&A
Is there a date scheduled for the first James Webb observation? or there's only a guesstimate date at this point?
Hi Frazier,
Any updates on the TMT ?? it seems to have totally fallen off the radar thanks!
Hey Fraser, question for the next Question Show. Following on from your "Should we broadcast signals into space?" question, when you mention if (intelligent) aliens are out there they know we exist - having much stronger equipment than things like James Webb. My question, what is the upper limit of something like infrared astronomy? Would distant aliens observing us through infrared astronomy be able to see us nuking each other by observing Cesium-137/Cobalt-60/etc. in our atmosphere? I'm just imaging aliens discovering a world with the fingerprint of industrialization, and then too their horror they start seeing the fingerprint of nuclear war.
- P.S looooooong time Universe Today reader, I have been visiting the site since about 2004 where I used articles as news stories to present in my high school group room (short "class" at the start of the day where roll was taken, announcements made, and our group room teacher would make all students give a summary of a news item they read the previous night.)
If any other intelligent life out there is watching us they won't see us as now. It Depends on how far away they are. Let's say if they were 65 million light years away planet earth was roaming with dinosaurs, even 500 light years away before the Industrial Revolution it would be very hard to detect intelligent life.
Isn't a space suit a "heavy" suit already? Granted, a 50-75lb suit might not do enough. But bulky as they are, it would be hard to make them heavier for use in gravity wells. However the benefit of a purpose built heavy suit to wear in a hab depends on how much room to walk around (unless Starship stays powered up) vs just doing exercises ala the ISS.
Corusant - 100% what you said.
Naboo - Von Neumann probs are to the universe what the internet is to Earth.
Remember the ending of Men in Black where the whole universe is in a marble.. with things being infinitely large and infinitely small what's the likelihood of that being possible?
Zero.
If there's a many amount of civilizations out there. Because of time being so great would these civilizations be at the same time?
I think that even a little bit of gravity will be better than none, and perhaps moon or mars gravity could have benefits? I mean, think about the sports you could play in a lunar or mars dome. Those people could be really athletic.
Check the UAPs fast radio burst if the askap still receive new UAPs from 25april it means sure from Elaine's?thanks nice presentation 👍
Hi Fraser :)
Question… could we potentially illuminate objects in the ort cloud with a big laser if we knew where an object would be?
It's the same as asking if we can illuminate the full earth from Pluto using a laser.
The amount of energy must be gigantic, consider that even the Sun itself is unable to illuminate those bodies with enough light for us to see. So if the Sun can't do it, how do you think that humanity will be able to find that amount of energy?
We should definitely send a probe to that comet. Get on it NASA/ESA/JAXA!
Do we even have the capability? Getting out as far as Saturn takes a few years, and that depends on favourable gravity assists. When will the comet be at its closest point of approach?
@@esquilax5563 It crosses the ecliptic in 2033 so that would be the easiest time for flyby. A probe like New Horizons with no gravity assists can do it in about 4 years. Small probe (500kg) and biggest available rocket at the time. Planning should start now for a 2028-29 launch.
@@zapfanzapfan ah fair enough, that's plenty of time indeed!
If we moved the moon closer to Earth would our magneto sphere last longer? Does it effect Earth today in that respect ?
If you could ask the Universe one question and receive the absolute answer, what would your question be?
"are we on the right track?"
The usual: what is life?
The question is Anthropomorphic; the Universe cant hear, think or answer questions. May not be the answer you were looking for, but _doesnt it answer all the questions?_ "We want mirrors, not other worlds" Solaris 2002
42 what?
@@istvansipos9940 - yes, ask a question it takes million of years to answer, it took 7,5 million years to find the number 42, and that was not a long time to wait?
What about asking something the universe can answer right away so we know?
Why do we hear that the Voyagers left the solar system if they're not even close to the ort cloud? They've crossed the heliosphere so does it mean the ort cloud sits on interstellar space? Thanks!
They have crossed the heliopause, so they are not within the sun's protective "bubble" but certainly still within the sun's gravitational field www.nasa.gov/press-release/nasa-s-voyager-2-probe-enters-interstellar-space
How long do you predict the Voyagers to survive their voyage? If you do not see them making it, what are some likely causes?
With 5% of Humanity doing Polyamory and this; for the lack
of a better word; 'Primitivness', doesnt seem to wanna end but instead intensifies
in these hard times, i see pitchblack for the Future of Humanity.
life started on earth 3.7 billion years ago, shortly after the formation of liquid water. mustafar what about panspermia?
As for signaling aliens about ourselves, would you want to call everyone in your own country by phone and tell them everything you own and where you live?
How can it be that the universe will not reach 0 K (which is a finite number) given that time is infinite.
Great channel and info....But earth and aliens sending back technical info between each other is fantasy land at best.
Still waiting for my self driving flying car.. lol, they are getting close. But only if we stop trying to blow ourselves up.
I don't think building a "bowl spin habitat" on Mars is harder than building a spinning 80th floor restaurant on top of a skyscraper, which we have already done here on earth, and the restaurant is just because we can, not because we needed to. The hardest thing about the bowl spin habitat on Mars is that it is on Mars.
That seems pretty hard.
To answer, are we along.
Dagonah
Notification squad. Reporting in. o7
You rang the bell!
Mars 1 Reporting in Sir!
@@frasercain Finished the video. I have to say that I've been surprised at the lack of discussion of something that seems obvious to me.
A colony, by definition, will include breeding. It is the only way it can become self sustaining. And, as you said, it will be hard. Lots of those who are the first to go will die. Those who survive, however, will breed, human nature being what it is. And life is nothing if not adaptable. Whatever happens, the survivors adapt. That first generation born on the Moon and on Mars will adapt as well, in ways we cannot predict, but which will making life on the respective body easier for them. Inevitably, they will begin to speciate and we will once again have multiple HUMAN species working together (if we get our collective acts together NOW) or fighting for dominance. As a genus, we need to do some serious growing up if we are to survive the problems of our own creation.
I would love to see you do an episode on this sometime.
Thanks for sharing. It was a great episode. I especially liked the discussion of why we want to colonize other places. (code: Corellia) Spot on.
Coruscant, CorusCant
Corusant
Code: Mandalore.
Yeah von Neumann probes aren't even a shadow in the eye until micro processor manufacturing becomes ... not only miniaturized but possible at all outside a clean room. A probe would need to be capable of mining, refining, and processing materials into all the components of itself and then assembling them. It would basically have to set up a full Civilization of other robots to produce the materials... produce the pure or alloys of materials... produce the tools... to make the other tools... to produce the components... to finally assemble a copy of itself. It's not going to find everything in one spot... It would have to build roads to mines... and refinery cities... and then component assembly cities... I'd put the level of sophistication required for this at least 1000 years if not 10,000 years away. The size of such a "probe" would be as big if not bigger than say... a colony ship full of humans.
It has the advantage of not needing to find or adjust a worlds environment to suit humans... but there are worlds that wouldn't suit robots either (Venus) so while they have a wider range of tolerable environmental conditions... they aren't invulnerable. My point is that a human colony ship could be simpler and thus Humans themselves are the von Neumann "probes"
The probe would avoid most of that work by not being on a planet, negating the need for roads, clean rooms, mines, etc. It will be working in space. Space already is a vacuum. It will be building itself out of an asteroid. These asteroids are rich in metals, volatiles, and carbon. Everything you need. You simply lack imagination which is why you are not an engineer or inventor.
Mustafar
I launched from this planet into space what you humans call von neuman probes around the year 1981
Alderaan
Grabby Aliens remind me of Hungry Hungry Hippos
Fraser! Question! (Let's see if you actually see this!) So what would say to people who say we should cut or stop spending so much on NASA and Space Exploration, and put it towards poverty and internal help to the country? I often get so much push back when I evangelize funding NASA, by people who say "Yea those billions should be put into education, poverty, social programs etc." How do you respond to this? What's your best case for space these days?
Respond to them by saying, We already give billions to welfare, social and charity programs. We give TONS of money to other countries all over the world. Barely a 3rd of Americans even work... the rest are either unable to work because of age/disability or they simply refuse to. If theyre so concerned about how Washington DC spends money, maybe they should look at how much politicians pay themselves. Maybe they should look at how their own City Council approves spending on insane projects. Moreover, NASA is peanuts compared to Defense Budget.
People who say that kind of s#!t are the people who dont even vote yet have a populist opinion about everything, they are parrots that mimic lobby interests. Look at all the money poured into Academia, and all the Tax Free entities like churches or Non Profit crooked CEOs who make six figures... Then they balk at a telescope's price tag that could very well save the entire species by locating an analog Earth nearby. Ridiculous morons
With those chapter names, I think this video was accidentally posted a week early...
Tatooine
Question
If you are born and raised on Mars would you ever be able to return to Earth due to the massive difference in gravity?
If not, would it be ethical to raise children on Mars?
I was hoping to live to see humans back on the Moon or a mission to Mars.
hmmm, i dunno about low gravity living,,,, surely aquatic mammals tell us its possible?
Why? Buoyancy is not anti-gravity.
Would Einstein be a successful and decorated scientist if he was working on problems today instead of the early 1900s?
I think so. But science was so much at the verge of understanding those mind blowing concepts, that you could argue that it was inevitable that someone discovered those things in that time period. But I'm not a scientist, that's just an idea of mine :D
Yes. on another note, consider all the Newtons, Eisteins, Michelangelos and others who were unlucky enough to be born in Neolithic times, or say 25,000 BCE. Being insanely smart, yet confined to a hunter-gatherer world full of pain, hunger and indifference. Indeed there were probably many Apex minds in the last 200,000 years (thats two hundred milleniums!) ... If it hadnt of been for them, I dont think we'd ever of started growing plants for food, or using bows and arrows, fishing or metallurgy, or irrigation... we'd stil be throwing rocks at rabbits and going hungry.
Corusant for the win! But I’m biased🤣
"What are the benefits of making contact...?" You want Daleks? Because that's how you get Daleks.
sex with aliens, period, end of story.
Has NASA looked into doing regular medical procedures in space, or on another world, like Mars? Like, do astronauts go to the dentist? What if a Martian astronaut loses a crown?
Shouldn’t the United States commitment to not test satellite destroying weapons be international treaty instead of the US hoping everyone else plays nice?
Kamino
Self replicating machines.
In the end though it could lead to something like DNA, and that already exists.
It must be a hard blow in life, to just become a shiny proud atom for in the next moment being sucked into a black hole and destroyed again, at least they can read books in the library, it that is any comfort
Why is it always assumed that aliens are going to attack us if they find out about us? Also, why is it always assumed that aliens are more advanced than humans?
They have to be staggering more advanced than us to be able to travel the vast distances.
Rather than Mars, we should build in the Ocean, or Canada... Plenty of empty real estate on Earth still🤣👍
Any species that can travel the universe, they don’t need earths tiny bit of resources. Because Astroids are much richer in resources and just easier to get, and more than that it’s hard to get on and off the planet. When you have all the resources of the universe at your fingertips. That means earth is much less interesting.
Sagan told me "Star Stuff", . . . you're telling me "Black Hole Dust". What's a person to believe???
Both sound pretty great, though.
On one hand you show how difficult and impossible to go anywhere in space, even to the moon and stay overnight, but the 5th ape continues to think aliens are watching us and we are going out to chat with them... Look around people at the current work the 5th ape has accomplished today. The states are 30T in the red ... Not too bad but that is reality. All this outer space stuff dwarfs that number..lol
were made from gods word. he spoke us into existence, this whole magic trick that nothing exploded and here we are is more ridiculous than anything i ever heard.
Which God do you mean, sikhism, Christian, Judaism, Allah?
@@Rob-eg8qc Im talking about the triune God off course, who came to us in person as Jesus Christ.
I think blackholes are the source of dark matter/energy
i can find no evidence for body fluid draining problems on the moon or mars, only for the long duration trip to and from mars. tested with long duration astronauts on ISS in microgravity. hamster wheels not needed. it would be great to tether two ships together and spin them up like a bola to simulate mars gravity or earth gravity on the way to mars. the 1/3 mars to 1/6 moon gravity is sufficient to force the liquid down and keep fluid out of your head and eyes, but it may take a while for the fluid to go back where it belongs after you land. microgravity fluid repooling/retention is what you were speaking of, but not low gravity. a weighted suit or a huge supply of batteries, equipment, tools and air, in fact you may want to add a lot of extra polyethylene or polyurethane insulation to block radiation when outside, call it the extra fat spacesuit, should be enough weight to retain muscle and bone mass in case you want to go back to earth someday
We are butt dust.
Aldebaran because gravity wells are for suckers!
Fraser, you really underestimate the complexity of modern manufacturing. A self replicating system is going to take a fleet of spacecraft the size of O'neal cylinders for the foreseeable future. At some time in the far future it might be reduced to the size of one. Who is going to finance such an undertaking when the advantages of being self replicating won't show up in their life time. It will be much cheaper to send ships that swing by a few nearby systems dropping off probes at each.
If you don't believe me, let's consider what you need to bring in order to duplicate something simple like a lathe.
First you need sensors to find asteroids and comets with the materials you need. Plus the fuel to navigate to each of them. This is not small because the orbits are unlikely to be close to each other.
Second are the tools and consumables needed to gather the raw materials. You need to collect multiple types of metal for the device plus water and organics needed to lubricate and cool the lathe. You also need to gather the raw materials to replace the consumables used in the gathering process and all the other stages of this process.
Third are the tools and consumables needed to refine the raw materials. Look at foundries and refineries for clues about this. Obviously you won't need them to be as big as on Earth, but the complexity and quantities needed will keep them from being truly small. You might be able to get away with one foundry for all the metals. The refineries will need to be specialized. The lathe itself will only depend on a couple of refineries. Replacing all the consumables used in the manufacturing process will require tens of different refineries. Remember that many different consumables will be used in this and every other step.
Fourth, the foundries need the ability to mix metals and additives to create specific alloys. The requirements of a lathe are simple, but this is a big deal for other things you will need to create.
Fifth is mixing, processing and forming all the consumables needed. This is easy for the lathe, but a nightmare for all the stuff used in the gathering, refining and manufacturing.
Sixth you need a 3D printer that is big enough and capable of producing high quality metal parts. Also a robot and tools capable of grinding, polishing and assembling the pieces with a very tight tolerance.
Then we get to the hard part. Without people we need the computers and control systems to run the lathe. Given an existing chip factory, this is only hundreds of times harder. Actually reproducing a chip factory would be thousands of times harder. There are many reasons why chip factories cost billions of dollars and require continuous monitoring and tweaking by humans.
Now take this and multiply it by the thousands of items needed for a minimum self replicating system and you get an idea of how hard and big this is going to be.
For those who will point to nano-machines as solving all of this, no it is not possible. Nano-machines will be useful for some refining and processing steps. However the abilities ascribed to them in popular culture are nothing but magic. A nano-machine capable of reproducing itself from raw materials will never happen. Forget about also doing another task on top of that.
“nano-machines… will never happen.”
hmmm… life is proof-of-concept. Systems of proteins with DNA data storage has been reproducing itself for billions of years. Humanity has been tweaking microbes for our purposes for decades so it could be argued that we’ve already harnessed nano-machines.
@@CarFreeSegnitz I never said nano-machines would not happen. I said the fantasy like magic powers that popular culture gives them will not happen. There is a very big difference. I believe nano-machines will see widespread use solving many practical problems. The difference is that they will be custom produced to solve specific problems. They have limited mobility and can never have logic beyond that of a few transistors. You talk about DNA. It's diameter is on nano scale, but its length is macroscopic. Also it doesn't do anything without the help of thousands of natural "nano-machines" that make up the cell.
How can the moon be 4.527 billion years old but a galaxy like Messier 51's only 400 million years old? This seams really odd and wrong
Where did you get the 400 million years old? M51 is probably almost as old as the Universe itself, at least 13 billion years old. I think that 400 million years old idea came from a poorly written press release that was talking about the central area of the galaxy that has undergone star formation because of a relatively recent galaxy collision about 600 million years ago. Read this section more carefully: hubblesite.org/contents/media/images/1996/17/416-Image.html?news=true
re - Mustafar @ ~ 14:15
The idea that we should be wary of extra-terrestrial-life, because of analogies such as "Colombus and the natives," or the "Europeans in Africa," etc, are- I believe- false analogies and thus unwarranted fears. Sure, 400 years ago European colonists were barbaric enough to displace natives and even to ethnically cleanse entire continents in pursuit of... whatever they were pursuing. And 'Sure,' the Belgians in the Congo or other Europeans in Africa 200 or 300 years ago was similarly barbaric. However, society has advanced WELL beyond such savage pursuits. There are, today, untouched tribes that have no contact with the outside world. No one is RUSHING to exterminate them!!! In point of fact, the Sentinelese people are protected by both the Indian government AND by regular armed military patrols.
This isn't done so that the Indians can subjugate the Sentinelese. It isn't done so that the Indians can enslave them. The Indians have no designs on the people or the lands of the Sentinelese. The world is a different place than it was just 150 years ago. There's no support, or even desire for global domination anymore. Slavery is largely (though not entirely) eradicated. If a new continent was miraculously discovered tomorrow, filled with primitive natives and (for example) the North Koreans decided that they should invade the new lands and slaughter/ enslave its people, does anyone REALLY believe that the UN, that NATO, etc... that the world would let such a thing happen?? Does anyone really believe that any nation would even want to invade this magical, new continent? OK, perhaps there might be some third world nation that might want to, thinking that this might empower their military or economy, or both. But the world as a whole has evolved to the point where such geo-political behaviour is intolerable. If there were some nation that thought they might benefit from invading (and possibly annexing) this magical, new continent, they would soon find themselves having to fight their way through an international coalition, before being able to invade.
We aren't particularly advanced beings, here on our world. We aren't particularly evolved, when it comes to benevolent behaviour, either. But we ARE evolved (behaviourally) enough to recognise how backwards and barbaric it would be for ANY advanced nation to invade and subjugate a primitive society. Russia is feeling the international scorn at this very moment and they weren't attacking a primitive people! Russia is invading an advanced nation. When Iraq invaded Kuwait, the world said "No!!! And also, please give us your oil!!" We're still growing and our behaviour, our humanity is still evolving, yet it would be repugnant for us to endure any advanced nation enslaving a primitive one.
It makes sense that any society more technologically advanced than us, would also be more morally and behaviourally more advanced than us. It makes sense because it would take vast amounts of time for a society to reach the level of technological development necessary to travel between stars. Vastly more time than it has taken us to reach our level of advancement. If it takes vast amounts of time to reach the technological level of development, then their society will have that same amount of time to develop morally and behaviorally. If their species is a social species, like ours, then their society will advance in such a way that they either learn how to better live together, or they all kill each other.
In other words:
In the roughly 10,000 years it's taken us to go from writing the first words, to travelling to other planets around our star, we've had 10,000 years to learn how to live together. We keep getting better and better at it. Things aren't perfect, but they're generally getting better all the time. We are at a point in our behavioural evolution, where it would be utterly unthinkable for us to kill and enslave a primitive race. In another 1,000 years, things will be even better! We'll have had another 1,000 years of practice at living together and we'll have become that much better at it. It might take another 2,000 or 3,000 years to learn how to travel to other stars. That's just another 2,000 or 3,000 years for our society to evolve and to get better at living together.
There's NO reason whatsoever to think that an alien society would be any different at all. It would take them time to learn how to travel between the stars, too. In that time, their society will evolve and get better at living together. If they meet us, they're likely to be behaviourally evolved enough to NOT want to kill/ enslave us, since it would be almost impossible for a society that is still fighting with itself to advance technologically far enough to be able to travel between stars.
Gee... That was a LOT longer than the brief thought I had in my head when I began writing this. So...
TLDR: The idea of "New, advanced society will crush primitive society" is based on human behaviour from HUNDREDS of years ago. We've evolved significantly since then and we don't do that anymore. Any aliens capable of reaching us would have a society that has advanced even further than ours, so enslaving us should be a repulsive idea to them. We should have nothing to fear from any society advanced enough to reach us.
1. You didn't answer the 1st question. If heavier elements are formed in high pressure, high temp environments then why can't elements above iron be formed in a quasar. Plus heavier the particular the more mass & angular momentum it will have & therefore better chance of being flung out of the quasar/black hole gravity well... no?
For 2nd question... video is a store & forward, not direct streaming. Think about the process you go thru to create a yt video... how many a-rolls & b-rolls you have saved before the final product. Then the "forward" process is not so easy. Imagine trying to upload or viewing 4K videos via a public hotspot. Plus sending stuff into space has a very high cost. NASA can't send up a bunch of equipment to store terabytes of data or generator & fuel to power all of this equipment to send streams of hi-def videos. I'd rather they send up scientific equipment & maximize what they can send up for the costs.
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Elements heavier than iron are formed in a supernova event, where an entire star collapses in on itself at 70% of the speed of light turning into a black hole in the process. Supernovae are very bright and give off a very specific signature, so if that was happening around black holes, we'd detect it.
Regarding video, modern cameras are incredibly light, even grams, and the storage is relatively lightweight as well. My assumption is that the astronauts will bring their storage devices home, where they can be archived and released to the public then. We'll see some live stuff, but the bandwidth will be focused primarily on mission goals.
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Bezos plan makes no sense in my opinion, basically says, add to shipping cost and pollution for the benifit of more expensive goods
Since the majority of shipping is done from orbit, the pollution is smaller than you probably think. Since splitting water to power hydrogen and oxygen rockets is an attractive option in space, it may in fact be close to zero.
Given safe and reliable landings, you can have space ports all over the place. This could dramatically reduce the transportation cost and pollution compared to the current land and sea options.
Initially only very rare elements, processes with extreme pollution problems or major cost savings from zero G processing will be cost effective. After the infrastructure has paid for itself this should slowly change to a wider range of products.
@@johnbennett1465 I mean, your also trapping the waste in low earth orbit, most pollution to worry about would be in the prefect spot to kill the ozone.
If solar is the only advantage then it's not really a advantage as you can do it on earth cheaper.
If you need zero g to produce a product then your manufacturing method is just wrong, there really is never a need to take advantage of surface tension to produce a product, you usually use a centrifuge rather than reducing pressure. I can't come up with a valid reason to reduce tension, it's going to need to be under gravity at some point, maybe a foam but that's just gimmicky.
@@CR-iz1od I didn't say anything about low Earth orbit. While most pollution does not affect ozone, having them fall back to earth does defeat the purpose. I also didn't say processes that require zero G, I said processes that are cheaper in zero G. Gravity interferes with many industrial processes. I don't know which ones will benefit enough to be worth moving to space, but give the product engineers some time and I am sure they will find some.
@@johnbennett1465 bezos can't go anywhere other than low earth orbit.
@@CR-iz1od it is going to take at least a couple of decades before before significant space manufacturing will be done. Things can change by then. I do hope he realizes that it needs to. In the meantime the are doing experiments and prototyping. I am willing to give them the benefit of the doubt for now. There is a lot we need to learn and it is a lot easier in low orbit.
I love how techie’s are so optimistic about where we are heading. We have been collapsing since the 1970’s and some how people look around and see endless growth. Maybe it’s time we all get our heads out of our asses and start thinking how much time we really have before tech which isn’t involved in trying to hold on to some of what we have arrives.
We have known since the 1970’s that our growth couldn’t pass the 2040’s before hitting constraints which can’t be overcome and yet we all keep thinking 100, 200 or 1,000 years in the future. It seems we can’t understand that population growth and environment destruction is scraping it edge and once it’s crossed we will collapse fairly quickly unless we have a very complicated plan. Are we working on that plan? NO. So what makes us think we will cross that bottleneck? Besides absolute belief in bigger, better and stronger we have no plan. At this point I can see hard times as early as summer/fall but not a peep out of the main stream. We believe idiot billionaires who can’t feed themselves yet seem to dream everything is possible at all cost as long as they don’t have to pay the price. We can’t even provide for people now and it will only get much more difficult in the near future.
Malthus too had careful arguments for why humanity could not grow past a population of a billion. Yet here we are.
Like the Ancient Greeks bemoaned that everything was discovered we currently can’t imagine a path forward. Obviously the Ancient Greeks had a failure of imagination. I would say present-day pessimists also suffer from a failure of imagination.
Ideology can really fog your reasoning. The most depressing thing is you don’t even notice it. 🙄
:- ) and yet, you write this on the internet. A global network making a bazillion $ in various forms, which did not exist in the 1970's in this very public form. It all started after the start of the "collapse". And you write it on a device nobody could dream of in the 1970's. A device you could afford.
And then all your claims. All baseless, empty, vague, all without citation, evidence, sources.
"population growth and environment destruction is scraping it edge and once it’s crossed we will collapse fairly quickly"
how do you know this, why are you not the saviour of mankind with that "knowledge", what is the "edge", why exactly that, and how will we collapse "fairly quickly"?
" I can see hard times as early as summer/fall"
what exactly can you see there? Again, how do you know it all?
In the 1970s, this collapse was supposed to happen in the 1980s
You lost me totally at "The aliens know we're here." Mate, they could be as advanced as dinosaurs and thus NOT know we are here at wll.
AI isnt going anywhere bro... same with EVs... both hyped out of control
Code: Dagobah
I feel like I might also need a different name for when I'm eating. 🪐 🍽
That's fair.