NASA's newest planet hunter has discovered its first Earth-size alien world.
The Transiting Exoplanet Survey Satellite (TESS) spotted the planet, as well as a weird "sub-Neptune" world, circling the star HD 21749, which lies about 53 light-years from Earth, a new study reports.
https://www.space.com/nasa-tess-first-earth-size-exoplanet-discovery.html