Come with us on a very final journey as we wander forwards in time at breakneck speeds to see what happens at the very end of the universe.
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Will there forever be stars in the sky? Will humanity roam the cosmos for eternity? What does the future hold for our Universe? This is a journey through space and time, from galactic collisions and hyperactive black holes, on to the death of the last star.
Watch the Q&A: https://youtu.be/kTbw2XceDTM
Geraint F. Lewis is a Welsh astrophysicist at the University of Sydney. He’s best known for his work on dark energy, gravitational lensing and galactic cannibalism. He also has a cool YouTube channel: https://www.youtube.com/channel/UCnPhuVSN3-gEeeSMyIMeDeA/about
This talk and Q&A was filmed in the Ri on 24 July 2018.
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Anyone contemplating the ultimate fate of the universe and civilization will find thought provoking ideas in Isaac Arthur's channel, SFIA – Science and Futurism with Isaac Arthur. Specifically, this video, https://youtu.be/Pld8wTa16Jk
To anyone interested in this video, I wholeheartedly recommend SFIA (linked above) for many many thought provoking ideas about the future grounded in science as we understand it today.
Pretty much fun and well done. Thanks, RI.
I ain't skeered.
The Sun is not a typical dwarf star, not by any measure.
thats makes no sense at all
The End of Time and The End of the Universe are not synonymous.
I think its really arrogant to assume that humans will be around for even the next 1,000 years let alone hundreds of millions….
The Universe does not care about us and does not owe us anything.
OK, so one day near the end of the universe, where red dwarfs coalesce like embers in isolated heat death, some remnant of civilization is going to construct this Dyson thingy – literally multiple bands around not any celestial object, but a star. Or maybe we're going to electronically or through some quantum means become immortal, for all intents and purposes. This really was a terribly boring presentation.
The more we know the more we realize we don't know anything… how arrogant we are that we think we're so special and unique in the universe considering its scale I find that opinion to be short-sighted.
once you traverse galaxy's you can probably create stars…
https://www.youtube.com/watch?v=bRHk-0z03XU
it would appear the big bang universe is crumbling….
black holes are a electromagnetic phenomenon…watch DavidLaPoint´s Primer Fields series…he demonstrates it in the lab…
why is he selling that protons are decaying? we dont know that
Same fictional story. This time told by pseudo Australian. In exchange for English story tellers going over there to reinforce the fictional tail. Ignorant nation unit instead of investigating true nature of universe. MG1
the universe is here within the ice dome, earth is flat, space is a hoax… START OVER
Milkomeda or maybe Android Way 🙂
Thx for mangling the simulation hypothesis
not just gorgeous ( a real silver fox!), not just gorgeous AND intelligent, not just gorgeous, intelligent AND a superb communicator – but gorgeous, intelligent, a superb communicator, AND Welsh! A quadruple whammy….what a joy to find this series.
Why is it "hard" to define life? In my opinion it is a biofeedback regulated low entropic 4D fractal structure that perpetuates it structure by self copying, using an external energy source to keep the structure intact.
Now 74, I am at the ends days. I'm going to miss life.
30:00 I read stuff from other websites, and they suggested that the Sun is NOT going to swallow Earth, because as the sun expands, the gravitational force decreases, and so the earth's orbit is going to expand as well. Is that true? or is it that the strength of the gravitational field depends on mass only, and does not depend on the density of the star?
Ummmm………
there is no end.
What was 'is' and what is 'will be' and what will be 'was'.
Bollocks to Brexit
1. Red dwarf stars are believed to increase in stability as they age, meaning life around red dwarf stars in the distant future is possible
2. Proton decay is a strongly debated possibility, not a certainty.
https://youtu.be/LFXPY-cghKA
This video is about the discoveries before Isaac
The delusion continues, this is like a nutty infomercial.
Trying to listen to this but he is talking bollox about politics. Downvote. Try and avoid saying bollox words
I always find it interesting that specialists, for the most part, tend to minimize, discount, or even mock (as this guy does) aspects they obviously have no idea about. "mythical" gods, etc. "Modern science"…which is woefully lacking in comparison to many ancient sciences. If the sciences of the ancient past are purely fictional and not to be taken seriously, then how is that so much of it is so much more accurate than our "modern science"? To call such knowledge mythology, filled with fictitious gods & monsters, is pure foolishness and outright arrogance. This man has a great deal more to learn before he opens his mouth and broadcasts his ignorance. He is missing colossal amounts of vital information and it shows.
Top lecture!
very good talk
The big bang was not like a conventional explosion, where matter is flung outwards from a central location. In the big bang, the space between things began to expand, equally and in all directions. Since everything in the universe before the big bang was located at the same place (the singularity), every single point in the present day universe is still the "center" of the universe.
Im sorry. Your trillions and trillioms of years, 1 star I think your on a FAR some thing. E*_ we the universe is self replication period. Life will take care of it self. Not by this FAR reach!
Not a knock but by 40:41 this guy is all over the place.
Disagree with the statement at 4:55 (all life on earth needs the sun to survive) There are life forms at the bottom of our oceans that don't rely on this energy source to survive. In fact, if the sun was to disappear, this life form could continue for many millions after!
It might be ludicrous to think that 'our' big bang was or is the only one. Perhaps there's another one, say a trillion, trillion light years away that we're not aware of. Perhaps the conditions that create one will even come to pass inside our own universe on a near time scale. Perhaps we will get so smart that we will accidently create one ourselves. That would really put a spanner in the works.
*Gerisn't
I truly feel bad for future civilizations that will arise after the expansion of the universe makes it impossible for them to realize that the universe is even expanding, and that there used to be countless stars visible in their night sky, and thereby know they weren't so alone.
To bad he doesn't know is information well not all stars are gone when they explode and all stars do not turn into black holes.
The speaker needs an update to his physical knowledge, or his ability to understand modern physics.
it has been proven that the earth is in the very middle of the universe and does not move,
its sort of gloomy
It's completely irrational, but for some reason, I'm saddened by the fact there are galaxies moving away from us at the speed of light! I mean it might have something to do with knowing of their [galaxies] existence, yet them being forever out of our reach or even vision, and the knowledge we will never have access to; and yes I'm fully aware that even getting [certain] knowledge from the next nearest galaxy is an improbability, or even knowledge from elsewhere in our own, but still!
Who TF named the galactic merger Milkomeda!?!? I think I'd sooner call it the Andromeda-Lactea galaxy; damn, even the Andromelactea/Andromelactate/Andromelactic galaxy would be preferable!!
Milkomeda, whose future civilizations will be known as Milkomedians, the laughing stock of the universe; they're not laughing with us!!!!!!!
Yes, in a few million yrs, we'll leave Earth en masse. And then in a few billion yrs, the intelligent evolved forms of the Cockroach will journey out after us; hopefully not holding a grudge for those millions that were stood on in aeons past!! 😀
After 100 trillion yrs, there are no stars. What of rock, dead lifeless planets of stone and iron? Or have they all, or mostly all, be swallowed up by black holes?
Also, if you went in a certain direction and instantly landed on a planet in one of the galaxies moving away from us at the speed of light.Would there be further galaxies out in the same direction moving away from them at even greater speeds. If so, for how far/how fast. If not, then what!?!?
Who else thinks that the cosmic web and/or groups of galactic superclusters looks somewhat like a human's brains neural net/ collection of nerves. If so, could the universe be considered a type of living entity, capable of growth and eventual death. There are a lot of parallels between the universe and biology.
I once said the entire Universe resides within my own mind. And that when I die, the universe will end.
It could be, (Quantum mechanically/probabilistically/ or something 😀 ) because you can never prove me wrong!!