Proxima Centauri (IMAGE) University of California - Riverside Caption Proxima Centauri, a red dwarf star and the nearest-known star to Earth, is orbited by a rocky planet that has the potential to sustain liquid water (artist's depiction). Credit NASA, ESA, G. Bacon (STScI) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.