NASA’s Transiting Exoplanet Survey Satellite (TESS) has begun its search for planets around stars within 300 light-years of the Sun. An artist’s illustration of NASA’s Transiting Exoplanet Survey Satellite. Image credit: NASA’s Goddard Space Flight Center. TESS is the first space-based, all-sky surveyor to search for alien worlds. The spacecraft was launched on April 18, 2018, with a SpaceX Falcon 9 rocket from Space Launch Complex 40 at Cape...