Planet of the Day: Kepler 78b

This Earth sized planet is really close to its star, completing an orbit in 8.5 hours.  It is so hot that its surface is probably melted. Its density shows it is similar in composition to planet Earth, so it probably has an iron core wrapped with rock. How it got so close, scientists are trying to figure out, since the various scenarios they have in mind doesn’t seem to be adequate. More details here. If only I could get behind the paywall for the studies. *sigh*


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