Reply to post: Of course, any life found anywhere would be super-duper exciting anyway.

PACK YOUR BAGS! Boffins spot Earth-size planet most likeliest yet to harbor alien life

JLV Silver badge
Boffin

Of course, any life found anywhere would be super-duper exciting anyway.

... but should we add gravity to the goldilocks mix, at least for not-too-primitive life?

7 Earth masses @ about same radius, means 6-7 g, no? At that level, wouldn't that preclude most non-flat lifeforms? Outside of water, at least? I could see lichen/moss growing, but no trees or grass as we know it. And animals would have limited legs and especially arms to manipulate/lift things with. Since weight goes up by cube of size, while structural strength goes up by square (that's why a 50' humanoid giant is impossible), you'd have very squat, small animals. And not to forget circulatory problems.

Call me a dumb Earth-chauvinist, but I am having a hard time envisioning what would thrive at that gravity, outside of very primitive lifeforms.

POST COMMENT House rules

Not a member of The Register? Create a new account here.

  • Enter your comment

  • Add an icon

Anonymous cowards cannot choose their icon

Biting the hand that feeds IT © 1998–2019