Artists impression of the Uranus-sized exoplanet Kepler-421b (Image: Daid A. Aguilar)
Astronomers made use of data collected by NASA's Kepler spacecraft over the course of four years to confirm the discovery (Image: NASA/JPL-Caltech)
With the aid of NASA's Kepler spacecraft, a team of astronomers, including members from the Harvard-Smithsonian Center for Astrophysics, has discovered an exoplanet with the longest yearly cycle ever recorded. The planet, imaginatively named Kepler-421b, takes an impressive 704 days to orbit its parent, a dim type K star.
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