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dylan604 2 hours ago

"planets with our conditions" is doing a lot of work here.

how many planets meet that criteria? most of the closest have typcially been labeled "super Earths" so their gravity will be greater than 1g. what effect will that have?

ASalazarMX an hour ago | parent [-]

If life has adapted to the crushing pressure of deep ocean, I have hopes that it can adapt to not-so-crushing gravity. I'm sure a lot of our current life could adapt if our gavity was doubled. I'd feel sorry for birds, though.

dylan604 an hour ago | parent [-]

Can trees pull water up to the top in >1g situations? At >1g, the deep ocean pressure would be that much more.

ASalazarMX 3 minutes ago | parent [-]

Quick googling tells me that trees move water internally by capillarity, and suction caused by leave evaporation, both processes passive.

This puts limits on how high the column of water can be raised, yet at 1g we can have monstrous trees like sequoias, so maybe many kinds of trees would die, but the survivors would just grow shorter.