GJ 3090 c, a super-Earth with a mass of about 10 Earths, was added to the NASA Exoplanet Archive on February 5, 2026. Orbiting the M-dwarf star GJ 3090 roughly 73 light-years away, it likely has a radius around 1.8 times Earth’s, suggesting a dense, rocky core with possible volatile layers or thick atmosphere. As an M-dwarf companion, its orbit is probably tight, exposing it to intense stellar flares and radiation that strip atmospheres—placing it outside the habitable zone. Discovered via TESS transits, it adds to our understanding of super-Earth formation around cool stars, which are common in the galaxy. While not habitable, it could host exotic geology like diamond rains or magma oceans. Further radial velocity data may refine its mass and composition, aiding models of planetary migration in multi-planet systems.
