Answer: Super-Earth
Notes: In October 2025, scientists discovered a new exoplanet named GJ 251c, located less than 20 light-years from Earth. The discovery was made by an international team, including researchers from Penn State University (PSU), USA. The finding was published in The Astronomical Journal. GJ 251c is a super-Earth, about four times the mass of Earth and likely rocky in composition. It was detected using the radial-velocity method, with data from the Habitable Zone Planet Finder (HPF) at PSU’s Hobby-Eberly Telescope (HET). The discovery provides key insights into planetary formation and the search for potentially habitable exoplanets.
