General > Off Topic
Please help this is taking to much of my DB time
Elite:
At those timescales though quantum effects dominate. If the universe freezes over then there is a potentially infinite timescale. Eventually quantum vaccum fluctuations will 'create' all kinds of weird stuff from the vaccum - most of which will be random mess but eventually (after quite a long time), an exact replica of the earth as it is now or [insert arbitrary object here] will appear.
And don't forget the possibility of this universe quantum tunneling into another one.
There are three possible candidates of the end of the universe:
- Big crunch - if there is enough mass in the universe (looks unlikely) - opposite of the big bang
- Big freeze - if there isn't - entropy death
- Big rip - if quintessesance ('dark energy') increases - universe forms a force-feedback loop: the bigger the universe is the faster it expands - galaxies fall apart, planets fall out of their orbits and matter falls apart
What about hypothetically escapeing the death of the universe if you could find a way of tearing the fabric of space-time enough to reach another universe. An extrodinary amount of energy is needed - but considering we've got another few billion years to go :D
PurpleYouko:
Apparently, it is thoretically possible to open a quantum wormhole, thereby creating a possible new big bang event.
The only drawback is that it is estimated to require an amount of power similar to that made by converting the entire mass of jupiter into energy.
That is a little mind boggling to say the least.
Endy:
We've still got the sun to worry about first. Thing'll eventually cool down and spread out, making mars the new first planet. Imagine that nightmare scenario, the whole planet on fire. :wacko:
Just me, but I'm hoping my decendents are out around jupiter by the time that happens. Barring some major inventions Jupiter and its moons are going to prime territories in the future. :D
Elite:
On quasars and ripping through space-time:
Quasars put out 10^40W - could they provide the energies needed?
That's 10^40J per second.
Meaning a quasar converts the equivalent 10^23kg to pure energy every second (E=mc^2)
Jupiter = 10^27kg approx
A quasar converts the equivalent of 1 Jupiter mass to energy every 3 hours
Yep - harness the power of a quasar (ie. incredibly advanced civilisation) and you could theoretically rip through space time
Talk about mind-boggling :blink:
On Jupiter:
How about this - detonate a neutron bomb in Jupiter's atmosphere (or bombard the atmosphere with neutrons) and the hydrogen atmosphere will absorb the neutrons and undergo nucleon-capture fusion to become deuterium (much better than fusing pure hydrogen) - fuel for your fusion reactors (assuming that they have been invented)
Would something like that be feasable (barring actually getting there)?
How about Europa - nice big underground ocean :D
Or just a floating city in Jupiter's atmosphere attached to a tether which is in turn attached to a counterweight (probably an asteroid) in geosynchronous orbit
The ice giants (Uranus and Neptune) would make great colonies - they have a gravity similar to Earth and their atmospheres contain hydrogen, methane and water etc. Bit cold though.
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