Astronomers have captured the universe's first confirmed failed galaxy, a starless expanse of dark matter dubbed Cloud-9, ...

Astronomers have identified an extraordinary new type of cosmic entity which they are calling a "window into the dark ...

Astronomers surveying the outer solar system have revealed that a rare object far beyond Neptune is moving in sync with the eighth planet in an unexpected way. Called 2020 VN40 and first discovered in ...

I/ATLAS, the fastest interstellar object ever recorded, is puzzling NASA experts with symmetrical jets and an unusual carbon dioxide profile.