[HN Gopher] How to Survive the End of the Universe (2014)
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How to Survive the End of the Universe (2014)
Author : firebaze
Score : 20 points
Date : 2021-09-09 19:22 UTC (2 days ago)
(HTM) web link (www.discovermagazine.com)
(TXT) w3m dump (www.discovermagazine.com)
| burlesona wrote:
| Title says 2014, but the article is actually 2004.
|
| An interesting read for sure. I'll admit though, I couldn't help
| think it unlikely that our present civilization will last the
| thousands of years necessary to reach the technology level he
| speaks of. HN readers know the myriad threads hanging over our
| heads so I won't try to list them all, but suffice it to say, I'm
| inclined to believe the great filter is still in front of us.
| kthxb wrote:
| Wikipedia's "Timeline of the far Future" [0] gives a 95% chance
| for hunans to be extinct in 10k years.
|
| [0] https://en.m.wikipedia.org/wiki/Timeline_of_the_far_future
| erredois wrote:
| By one calculation, other person calculated 7.8 mil years for
| 95% of extinction mentioned on the same page.
| zw123456 wrote:
| Wouldn't it be simpler to build a time machine and go back in
| time in the same universe to a nicer time ?
| aranchelk wrote:
| Now we're in danger of just listing plots of Christopher Nolan
| movies.
| zw123456 wrote:
| I'm all in for fan fiction effort :)
| yawaworht1978 wrote:
| If there would really be wormholes, did Einstein or anyone else
| have an estimate on how we would perceive the time elapsed after
| passing through one?
|
| I understand the definition of a wormhole is the entrance is a
| black hole, the exit is a white hole, that's what I read once.
| Means one way journey.
|
| Maybe we will be able to generate black holes with a white hole
| to emit ourselves to another place, but that would still not mean
| we would escape the end of the universe. Unless I understood
| wrong and a wormhole is not a black and white hole construct, but
| leading to another universe.
| codethief wrote:
| > I understand the definition of a wormhole is the entrance is
| a black hole, the exit is a white hole, that's what I read
| once. Means one way journey.
|
| This is not the definition. The source of your confusion might
| be that the simplest solution to the Einstein field equations
| that contains a black hole (called _Schwarzschild solution_
| [0]), also contains a white hole and a separate, let's say,
| "universe" when considering its so-called maximally extended[1]
| solution. The two universes (region I and III in the diagram in
| [1]) are separated by the black hole and the white hole (region
| II and IV in the diagram in [1]) and there's only an
| "infinitesimally small" connection between them, called an
| _Einstein-Rosen_ bridge[2], which is usually considered to be
| the simplest example of a (non-traversable) wormhole.
|
| People have _speculated_ that on the "other side" of a black
| hole there's a white hole ejecting the matter swallowed by the
| black hole into another universe (which would _kinda_ be a
| wormhole) but this is pure speculation.
|
| [0]: https://en.wikipedia.org/wiki/Schwarzschild_metric
|
| [1]:
| https://en.wikipedia.org/wiki/Kruskal%E2%80%93Szekeres_coord...
|
| [2]:
| https://en.wikipedia.org/wiki/Wormhole#Einstein%E2%80%93Rose...
| paulpauper wrote:
| I dunno maybe someone , preferably Michael Nolan , should make
| a movie depicting such a concept.
| yawaworht1978 wrote:
| Upon further research, I have found an academic source, the
| theory unlike my 2 scenarios, it's a mix, quote: "The
| complete Schwarzschild geometry consists of a black hole, a
| white hole, and two Universes connected at their horizons by
| a wormhole."
|
| https://jila.colorado.edu/~ajsh/bh/schww.html
| dobin wrote:
| When the stars go out, we can live as virtualized entities in a
| big computer built around a black hole for a few quadrillion
| years, by using the hawking radiation as energy source. We have
| like 200 billion years to collect as much matter in our local
| supercluster as possible. After the black holes evaporated, maybe
| can use proton decay.
|
| According to Isaac Arthur (on youtube. I highly recommend it).
| Torwald wrote:
| > This was the basis of Arthur C. Clarke's 2001: A Space Odyssey,
| which may be the most scientifically accurate depiction of an
| encounter with an extraterrestrial intelligence.
|
| This line got me thinking, is Stanislaw Lem's "Swarm" more
| scientifically accurate than the watchers in Space Odyssey?
| the_third_wave wrote:
| Just make sure you make it to _Milliways_ [1] in time and you 'll
| survive it just fine.
|
| [1] https://hitchhikers.fandom.com/wiki/Milliways
| alboaie wrote:
| "A cold, dark universe is billions, if not trillions, of years in
| the future. Between now and then, humans will face plenty of
| other calamities: wars and pestilences, ice ages, asteroid
| impacts, and the eventual consumption of Earth--in about 5
| billion years--as our sun expands into a red giant star. To last
| until the very end of the universe, an advanced civilization will
| have to master interstellar travel, spreading far and wide
| throughout the galaxy and learning to cope with a slowing,
| cooling, darkening cosmos. Their greatest challenge will be
| figuring out how to not be here when the universe dies,
| essentially finding a way to undertake the ultimate journey of
| fleeing this universe for another.
|
| Such a plan may sound absurd. But there is nothing in physics
| that forbids such a venture. Einstein's theory of general
| relativity allows for the existence of wormholes, sometimes
| called Einstein-Rosen bridges, that connect parallel universes.
| Among theoretical and experimental physicists, parallel universes
| are not science fiction. The notion of the multiverse--that our
| universe coexists with an infinite number of other universes--has
| gained ground among working scientists." From article... The
| infinite concept is probably a human made conncept so and anyway
| 1 million years is probably more than enough to change your
| "identity" a few hundreds time (at least). So this surving the
| end of the universe is a bit too much to consider even in the
| wildest fantasies ;)
| pfdietz wrote:
| Relevant SF story:
|
| http://www.isfdb.org/cgi-bin/title.cgi?44207
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(page generated 2021-09-11 23:02 UTC)