The summer Milky Way that now stretches across the evening sky is like a great bridge of celestial light. The region of sky in and around Sagittarius, which lies due south at about 10 o'clock, is by ...

New simulations of Milky Way-like galaxies reveal that the strange split between two chemically distinct groups of stars may ...

New simulations reveal that the Milky Way’s odd split between two chemically distinct groups of stars isn’t a universal ...

The universe is filled with immense structures of mind-crushing proportions. They wield energies that vastly exceed our most fevered dreams. Yet from Earth these configurations can barely be seen at ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A collision between ...

New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite galaxies—up to 100 more than we currently know. These elusive "orphan" galaxies have ...