Watch NASA Launch TESS, Its Latest Planet Hunter
There’s a great world next door. Let’s go. The search for alien worlds and perhaps alien life will take another step outward this week when TESS, the Transiting Exoplanet Survey Satellite, is launched into orbit around the Earth. TESS will spend at least two years scrutinizing the entire sky for exoplanets — planets around other stars — within about 300 light years from here. The worlds next door.