Proxima Centauri c

Here's what Proxima Centauri C could look like.

Proxima Centauri C (also called Proxima C or Alpha Centauri Cc) is an exoplanet candidiate to have been discovered in the Proxima Centauri system. The planet could either be a superterran or mini gas planet and may have a ring system akin to that of Saturn, as well as at least an exomoon.