These neighboring dwarf galaxies, the Large and Small lunar Clouds, have become a living laboratory for the study of galaxy interactions and star formation a role that has only grown more vital as ...

Our Milky Way could have many more satellite galaxies than we've detected so far. They're just too faint to be seen.

Scientists predict up to 100 invisible galaxies may orbit the Milky Way, hiding just beyond our current detection limits.

Stars don't form out of nothing, but tracking the gas and dust that do eventually form stars is hard. They float around the ...

A surprising discovery at the heart of the Milky Way is forcing scientists to rethink how massive structures called Fermi ...