Upon further investigation, it seems that Gliese 581d may be the only one of the two actually in the habitable zone, and its ...

At a frigid -125 degrees Fahrenheit (-87 degrees Celsius), WD 1856+534 b is the coldest planet ever directly observed, ...

“Since the star is so feeble, that’s well outside its habitable zone. If so ... within the dense environment of the Milky Way’s galactic bulge. The upcoming Nancy Grace Roman Space Telescope ...