An exceptional planetary system discovered in Cassiopeia

30 julio 2015

Astronomers have teased out a secret planetary system hiding in the arms of Cassiopea, just 21 light years away from us. The remarkable system, named HD219134, hosts one outer giant planet and three inner super-Earths, one of which transits in front of the star. The transiting super-Earth has a density similar to the Earth. It is by far the closest transiting planet known today. It provides the ideal candidate for follow-up studies and a deeper understanding of planetary formation, internal composition, and atmospheres. The system is so close that astronomers already dream about taking pictures of the new «Stars.»img src=»http://feeds.feedburner.com/~r/sciencedaily/~4/oXDi3ABw_Es» height=»1″ width=»1″ alt=»»/
http://feeds.sciencedaily.com/~r/sciencedaily/~3/oXDi3ABw_Es/150730162946.htm

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