How many more plan­ets than stars ex­ist in our galaxy?

1.6 times more plan­ets than stars.

Science Illustrated - - ASK US -


In an analysis from 2012, as­tronomers tried to cal­cu­late the aver­age num­ber of plan­ets that ex­ist per star. The rough es­ti­mate is:


Our galaxy, the Milky Way, in­cludes some 400 bil­lion stars. Sci­en­tists now know that most of them are or­bited by one or more plan­ets..

Num­ber of con­firmed ex­o­plan­ets: 3,710 (late 2017)

Num­ber of stars in the Milky Way: About 400 bil­lion

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