The next generation of exoplanet hunting has arrived in the form of NASA’s Transiting Exoplanet and Survey Satellite. TESS looks at closer and brighter stars than Kepler, the spacecraft that first turned the trickle of exoplanet discoveries into a deluge. While TESS, which launched last year, is just beginning its sky search, it’s already started discovering new planets. Astronomers say they’ve discovered an Earth-sized planet dubbed HD 21749 c that sits just 52 light-years from Earth and or