Surprise! TESS shows Alpha Draconis undergoes eclipses
Tuesday, January 7, 2020 - 07:30
in Astronomy & Space
Astronomers using data from NASA's Transiting Exoplanet Survey Satellite (TESS) have shown that Alpha Draconis, a well-studied star visible to the naked eye, and its fainter companion star regularly eclipse each other. While astronomers previously knew this was a binary system, the mutual eclipses came as a complete surprise.