Unconfirmed Candidate Proxima d: A Low-Mass Planet Hint in the Proxima Centauri System

To the point

Proxima d could be a very light planet orbiting Proxima Centauri every five days with a minimum mass of about 0.25 Earth masses inside the star’s habitable zone, but its existence awaits confirmation from follow-up ESPRESSO observations on the VLT led by João Faria, and if confirmed it would show the instrument’s ability to detect small, Earth-like worlds and hint at a richer system of low-mass planets around our nearest star, a view echoed by Pedro Figueira.