Add Yahoo as a preferred source to see more of our stories on Google. An illustration of the newly discovered Earth-size planet TOI-700e orbiting within the habitable zone of its star. Its Earth-size ...

NASA launched the Transiting Exoplanet Survey Satellite (TESS) in 2018 with a two-year mission to scan the sky for exoplanets. As often happens with NASA spaceflight, the mission has long passed its ...