re: Gliese 876 is a red dwarf
OK, 1.3 times the solar flux at Mercury BUT tide locked
No rotation
One hot hemisphere - maybe still 1000 K
One glacial hemisphere where nitrogen freezes into an icecap
In between, a sliver of dawn where the cryogenic glaciers creep sunwards, and fizz and boil and perhaps a trickle of water runs down into the dry basalt sand.
And maybe something slimy survives on the edge of night, caught forever between the sun and the cold eternal dark of space...