05/30/2022
A new planet may be the first really habitable exoplanet.
The Gliese 581 system's inner four planets and their host star, a red dwarf star only 20 light years distant from Earth, are depicted in this artist's conception. The huge planet in the foreground is GJ 581g, a recently found planet with a 37-day orbit smack in the center of the star's habitable zone with a mass of three to four times that of Earth and a diameter of 1.2 to 1.4 times that of Earth. The other three planets are seen from top left to GJ 581g on a diagonal.
