Proof we are - probably - not alone

Channel Hopper

Channel Hopper

Suffering fools, so you don't have to.
Staff member
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
Forgot the gratuitous shot of the purple rinse woman defending the world against those pesky aliens
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Thats a lovely shot of the galaxies.

(The biddy aint too bad either) :D
 
17 billion Earthlike planets out there:

www.bbc.co.uk/news/science-environment-20942440
 
You must be in a parallel universe as I still can't gurantee the live link turns off in this one.

17 billion earthlike plants eh ? More totty then.
 
Just delete the http:// off the link before you hit the post button :D
 
The planet must be in the Green zone from the Sun. It must have a magnetic shield of some power. It must have a decent Moon. It must have at leas one
megabig planet (like Saturn) to kill most of the asteroids. It must(of course) have water.

Seems like the Moon is a BIG must at least for our planet - without it there wouldn´t be any life here and the planet would just show the same face towards the Sun so no Spring/summer/winter.

So, I am not sure that any of billions earth like planets will do. Plenty of if´s.
 
dig deep said:
Seems like the Moon is a BIG must at least for our planet - without it there wouldn´t be any life here and the planet would just show the same face towards the Sun so no Spring/summer/winter.

So, I am not sure that any of billions earth like planets will do. Plenty of if´s.
Click to expand...
Venus has no moon, and it rotates, though not very quickly.

Apparently the vast majority of stars out there are binaries, which would help in most cases provide both orbital and seasonal climate variations on a foreign world.
 
Most binaries would, apparently, provide too much variation and take the planet concerned out of the "Goldilocks" zone at some point during the planet's orbit.
 
There are thousands of potential orbits that exist round a binary system, but the S-type system planet orbit is one that has a chance of stability

http://www.space.com/9388-surprise-discovery-planets-stars-system.html

There may not be much chance of a life creating period on anything in a circumbinary orbit, but even then, they could be used as a stepping stone for an advanced civilisation.
 
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