• NOW LIVE! Into the Woods--new character species, eerie monsters, and haunting villains to populate the woodlands of your D&D games.

"Super-Earth" orbiting Gliese 581


log in or register to remove this ad



It's only habitable in the most charitable sense. Besides the gravity, it's almost certainy tidally locked, which means half the planet is too hot, the other half too cold. There might be a band around the middle that's decent, but the weather would be really active, most likely.

I would also think radiation from its sun would be a problem. It's very very close, and while Red Dwarf stars are dim, they are fairly active.

Still neat, though.
 




paradox42 said:
I haven't seen any threads on this topic yet, but no doubt a lot of people here would be interested. Check out these links:

Scientists find most Earth-like planet yet
New 'super-Earth' found in space

Ladies and gentlemen, we appear to have our first target for interstellar colonization efforts. :D

Just remember, it this point "Earth-like" only means "the possibility of liquid water and smaller than Neptune".

Don't forget that this is a tidally-locked planet orbiting a variable red dwarf star... While that doesn't necessarily rule out extra-terrestrial life, it wouldn't normally be very condusive to our sort of life.
 

Pbartender said:
Just remember, it this point "Earth-like" only means "the possibility of liquid water and smaller than Neptune".

Don't forget that this is a tidally-locked planet orbiting a variable red dwarf star... While that doesn't necessarily rule out extra-terrestrial life, it wouldn't normally be very condusive to our sort of life.
Of course. But note that the scientists estimate its surface temp is between 0 and 40 degrees C, which are survivable ranges for humans and Earth life regardless of which end of the scale you're on (though admittedly not at all comfortable for us at the extremes). Even though it's tidally locked, there'd be plenty of habitable territory in the regions not directly facing the star or directly away from it. 20 and 30 C are generally quite comfortable. Given how much water is seen in the cosmos, there's almost certainly plenty in that system, so a fair amount should be on this planet- and if there's anything all the microbes we've been finding in crazy places lately teaches us, it's that anywhere liquid water exists, life eventually gains a foothold.

The real question (putting aside for the moment the tiny issue of getting there in the first place :lol: ) for seeding it with Earth-life is, what sort of atmosphere is there? Chances are it's got a significantly different mix of gases, so any native life that is there probably isn't very (or at all) compatible with ours environmentally. There's got to be an atmosphere of some kind, with two gas giants orbiting nearby and gravity 1.6 times Earth standard, so no worries about a barren hunk of rock in this case.
 


Into the Woods

Remove ads

Top