Using data from the Echelle SPectrograph for Rocky Exoplanets and Stable Spectroscopic Observations (ESPRESSO) on ESO’s Very Large Telescope (VLT), astronomers have detected a candidate short-period sub-Earth planet circling Proxima Centauri, a red dwarf located only 4.23 light-years away in the constellation of Centaurus. An artist’s impression of Proxima d. Image credit: ESO / L. Calçada. Proxima Centauri is an M5.5-type star located 4.244...
