Nothing is easy when you have two stars instead of one. Under the right circumstances, it can be especially hard to hold on to your atmosphere.
It’s difficult to tell how the individual stars of a galaxy rotate. What can we find out just from their metal content?
Massive astronomy surveys reveal previously undiscovered structures. What can three new globular clusters tell us about the ancient Universe?
Did Aboriginal Australians notice that Betelgeuse is a variable star? Today’s paper provides additional evidence that they did.
We need to know the radii of M-dwarfs to study their exoplanets, and the models aren’t much help.