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.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Y...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Y...