Astronomers have made a remarkable discovery in the Kepler-139 star system, uncovering an alien planet that had previously evaded detection. The newly identified exoplanet, Kepler-139f, is a giant ...

This makes it 35 times the mass of Earth and a year on its planet lasts 355 days, the discoverers noted in their findings published in The Astrophysical Journal Letters. The planet was detected after ...

Astronomers have uncovered major size errors in TESS planet data, suggesting we’ve found fewer Earth-like exoplanets than we believed.