Transiting exoplanet with longest known year: 704 Earth days
Monday, July 21, 2014 - 15:00
in Astronomy & Space
Astronomers have discovered a transiting exoplanet with the longest known year. Kepler-421b circles its star once every 704 days. In comparison, Mars orbits our Sun once every 780 days. Most of the 1,800-plus exoplanets discovered to date are much closer to their stars and have much shorter orbital periods.