NASA's planet-hunting Transiting Exoplanet Survey Satellite (TESS) is back in action, searching for worlds beyond the solar system's limits.
TESS came out of "safe mode" on May 3, resuming its search for worlds in other star systems known as extrasolar planets (or exoplanets) as they cross or "transit" the face of their parent stars, causing a tiny dip in starlight. The satellite had gone into safe mode when halted operations on April 23, just five days after it celebrated the sixth anniversary of its launch on April 18, 2018.
