https://sciencythoughts.blogspot.com/2012/02/planetary-formation-around-gm-cephie.html
Sciency Thoughts: Planetary formation around GM Cephie.
GM Cephei is a young (about four million years old) variable star in the Elephant's Trunk Nebula (Trumpler 37), about 2450 light years from ...
thoughtsplanetaryformationaroundgm