Author: aziz

Scientists warn that aliens may come to destroy us [Copy link] 中文

Post time 2011-8-26 14:07:15 |Display all floors
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Post time 2011-8-26 17:52:46 |Display all floors
Originally posted by exportedkiwi at 2011-8-24 16:12

That was the plan, they count sheep, fall asleep and we sneak out of the forests and kill'em befoire they kill us, excellent tactician I am!

I recommend you to be Tactical Advisor and/or 5 Star General in Military Affairs section.
jia na da ren

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Post time 2011-8-26 18:03:34 |Display all floors
Originally posted by canada_man at 2011-8-26 17:52

I recommend you to be Tactical Advisor and/or 5 Star General in Military Affairs section.


Can i be a testicle advisor in the fun section  

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Post time 2011-8-26 18:37:13 |Display all floors

Earth Brand™ Life

So, Hawking takes us on a thrilling ride through some potential shapes aliens may take, but using life on Earth as the blueprint.

At one point in the documentary, Hawking describes how feet would be useful for any life form that has evolved on a solid surface. He also points out that eyes are handy too.

Eyes and feet have been optimized to function on our planet, so perhaps some variation will be found attached to a life form thriving on a distant world.

When speculating about alien life, it's open season; anything goes. But we only have experience of Earth Brand™ Life, so that's an obvious place to start. We know (to the best of our ability) that the laws of physics are universal, it seems logical to assume life is too (apart from some variations in detail).

If there's life, there's the potential that in some world orbiting some star in some galaxy, an intelligent space-faring race may be as inquisitive as we are, pondering their place in the cosmos and looking for other civilizations like their own.

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Post time 2011-8-26 18:38:02 |Display all floors

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Post time 2011-8-26 18:39:12 |Display all floors

Listening Out for the Neighbors

In an effort to find intelligent civilizations, we have to assume that they're a bit like us, so the first thing we look for are radio waves. The Search for Extraterrestrial Intelligence (SETI) has been doing this for 50 years, carefully listening for any ET call home. If humans communicate via radio waves, there's a good chance that another intelligent civilization has done the same.

Alas, apart from one isolated case, SETI has turned up zero evidence for the existence of extraterrestrial intelligence. This means we are either wrong to be listening out for ET's radio transmissions, we haven't given it enough time or (and this is the downer) there's no other intelligent life out there.

I strongly suspect that given the sheer scale of the universe, and the mind-boggling quantities of exoplanets orbiting countless stars in countless galaxies, there's intelligent life other than us. Granted, there's no evidence of ET, but as Hawking points out in his documentary, his mathematical brain cannot discount the possibility of alien intelligence when there are endless possibilities inside the hundreds of billions of galaxies we know are out there.

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Post time 2011-8-26 18:40:05 |Display all floors

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