NASA's Newest Planet Hunter Will Do What Kepler Couldn't

On April 16, NASA is planning to launch its Transiting Exoplanet Survey Satellite, or TESS, on a SpaceX Falcon 9 rocket. TESS is an Earth-orbiting instrument meant to spot faraway planets circling some 200,000 stars within 300 light-years of Earth. Astronomers hopes that TESS will help them learn whether or not there...