An article published in the journal “Astronomy & Astrophysics” reports the discovery of another rocky planet in the Proxima Centauri system. A team of researchers led by João Faria of the Instituto de Astrofísica e Ciências do Espaço, Portugal, used detections conducted with the ESPRESSO spectrograph mounted on ESO’s VLT in Chile to find the traces of the planet that was cataloged as Proxima d. This is the exoplanet with the smallest mass identified with the radial velocity method since the estimated minimum mass is about a quarter of the Earth’s, twice Mars’s. Its distance from Proxima Centauri is around 4 million kilometers, so it’s more similar to Venus or Mercury.