Unconfirmed Candidate Proxima c: A 6-Earth-Mass Planet at 1.5 AU from Proxima Centauri
To the point
Proxima c is a candidate planet around Proxima Centauri, discussed by Mario Damasso and Fabio Del Sordo, likely about six Earths in mass at roughly 1.5 AU, but the signal is weak and the finding is unconfirmed and not yet peer reviewed, needing more observations to confirm.
