October 25, 2022

Artist's concept of a rocky planet's atmosphere being stripped by a red dwarf's flares

An article published in “The Astrophysical Journal Letters” reports a study on the exoplanet GJ 1252b which concludes that it has no atmosphere. In particular, a team of researchers used data collected by the Spitzer Space Telescope to examine this rocky planet which is about 20% larger than the Earth with a mass that is about 32% larger than the Earth’s. GJ 1252b orbits a red dwarf and according to the researchers, this star stripped this super-Earth’s atmosphere. This is due to the fact that red dwarfs are small but very active stars and confirms that it may be difficult to find a habitable planet around this type of star.