The fast-moving gas cloud could help explain the so-called missing satellite problem, if the object is what scientists think ...

"No existing galaxy formation model within our standard cosmological paradigm can currently explain how this galaxy came to ...

The rotating disk galaxy, mostly made up of dark matter, was discovered within a larger cloud of fast-moving hydrogen gas.

A blob of gas seen outside the Milky Way could be a type of starless, dark matter–dominated galaxy. Some scientists are skeptical.

Today's rather aquatic-themed NASA/ESA Hubble Space Telescope image features the spiral galaxy Messier 77, also known as the ...

The image was published as part of the 35th anniversary celebrations of the NASA/ESA Hubble Space Telescope, which was ...

Astronomers are applying new image-processing techniques to previously released Hubble observations in honor of the space ...

Zhúlóng is the most distant spiral galaxy ever seen. It formed 1 billion years after Big Bang, yet has a calm structure like ...

The Hubble Space Telescope reveals a new image of the Sombrero Galaxy, indicating its unique formation and merger with another galaxy.

Astronomers from Swinburne University in Australia and elsewhere have employed the Keck II telescope to investigate the ...

"What makes Zhúlóng stand out is just how much it resembles the Milky Way—both in shape, size and stellar mass," said the ...