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@Kryptik bro, that's a good one!
On a more serious note, I think I have to agree that Man will ultimately cause his own extinction, way before any natural calamities can.
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Posted: 2008-01-03 09:58:00
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@deluded
Our Sun has enough fuel to last another few billion years so I don't think we need to worry about that yet - unless of course we discover the secret of immortality. (Imagine reaching your billionth birthday
)
I am of the opinion that life on earth will continue long after humans have come and gone.
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Posted: 2008-01-03 10:16:10
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On 2008-01-03 01:39:25, CookiCrumble wrote:
What i've never really understood is why is the sun expanding?i've always held the opinion that the sun was burning itself out?
before a sun collapses in on it's self due to lack of fuel (burning out as you say), it's expands for several million years as the gas is no longer held so densely packed due to the sun's decreased mass compared to when it was younger. Lower mass, lower gravity, therefore less ability to hold in the remaining gas. Sun's such as ours do this, however some types of Sun's don't expand and instead just collapse without expanding. Yet others go supernova, destroying themselves completely in a dramatic explosion that takes only a only a few weeks to occur.
The giant sun however will be much less dense than the sun is now, and not as hot. Still hot enough however to fry away all earth's oceans as it expands.
By then though, my guess is Earth humans will have colonised planets orbiting other sun's. It seems quite probable to my mind that within several thousand years humans will have invented a viable form of insterstellar travel, and if so we have plenty of time to colonise our local galaxy and will no longer need earth to survive. Our home planet, and home solar system may even be abandoned well before the Sun expands to encompass the earth.
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Posted: 2008-01-03 13:55:50
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@goldenface,It's not of man's immortality..it's about mankind's stay in the
earth.@all,all the burnable gases in the sun's atmosphere make helium after combusting.Like when you burn a log and when it's almost completely burnt till it is completely burnt,The flame rises higher and after it's completely burnt,a gush of flame soars up and vanishes...Scientists say that the sun will also expand..but never trust words..
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Posted: 2008-01-03 14:10:00
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On 2008-01-03 13:55:50, max_wedge wrote:
before a sun collapses in on it's self due to lack of fuel (burning out as you say), it's expands for several million years as the gas is no longer held so densely packed due to the sun's decreased mass compared to when it was younger. Lower mass, lower gravity, therefore less ability to hold in the remaining gas. Sun's such as ours do this, however some types of Sun's don't expand and instead just collapse without expanding. Yet others go supernova, destroying themselves completely in a dramatic explosion that takes only a only a few weeks to occur.
The giant sun however will be much less dense than the sun is now, and not as hot. Still hot enough however to fry away all earth's oceans as it expands.
By then though, my guess is Earth humans will have colonised planets orbiting other sun's. It seems quite probable to my mind that within several thousand years humans will have invented a viable form of insterstellar travel, and if so we have plenty of time to colonise our local galaxy and will no longer need earth to survive. Our home planet, and home solar system may even be abandoned well before the Sun expands to encompass the earth.
makes sense now thanks.
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Posted: 2008-01-03 14:18:44
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On 2008-01-03 14:10:00, tapojyoti wrote:
@goldenface,It's not of man's immortality..it's about mankind's stay in the
earth.@all,
Oh, I believe the Sun will eventually burn out, but like I said, it won't be for hundreds of thousands of years.
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Posted: 2008-01-03 14:23:09
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Ok...we've seen that we simply have to go away after a million years or sooner.Especially since we discovered galactic cosmos..See the first page for more info..So..ultimately a spaceship would be handy.So..what will the ship have to take and what features it'd have to have we'd try to figure out!Oh...if anybody wants to hold his science related question or another topic..you can post here as well!
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Posted: 2008-01-03 16:56:00
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I believe that we will eventually be immortal. It's simple really, science will eventually understand what makes us die - and find a way to stop it.
But we may decide we don't want immortality, or that we are happy just to life a very very long time, then choose to die of our own free will when we have satisfied our lust for life.
By then maybe science/religion will have combined and discovered reincarnation to be true, in which case will we need to live "forever" if it means we will never experience another body type? Maybe even if there is no life after, we will learn to change bodies as we change clothes? Maybe we will have cloned bodies ready and waiting for us to "move into" when we are ready to "die". Who knows what is possible.
Once it was believed the earth was flat. Now we know the universe is so large that their are billions upon billions of galaxies each with billions of stars in each. The horizon is always expanding, and so are the possibilities.
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Posted: 2008-01-04 12:31:09
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[quote]
On 2008-01-04 12:31:09, max_wedge wrote:
I believe that we will eventually be immortal. It's simple really, science will eventually understand what makes us die - and find a way to stop it....Whatever..the dark place..is near a corner of the universe...as I said...it is so DARK that light can't go there..I wonder what is BEYOND that DARK thingy.And about that...man would probably create a machine with responsing system which can obey the brain's command.That's very hard to make..plus..it'd work with some electrical power..it'd gotta have a responsing system that'd be able to respond to every command of every micro-metre part of the brain's command.Life would go quite transparent...
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Posted: 2008-01-04 13:56:00
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Wow, just wow. Arthur C. Clarke was a little baby compared to you guys...
But I admire you guys having such a broad imagination..
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Posted: 2008-01-04 15:10:20
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