A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his ...

Inside the bright but unassumingly named nebula Gum 55 lies a dark nebula — a rift of dust grains that absorb visible light — creating a swatch of darkness against the glow of bright gas. Fittingly ...

The Andromeda galaxy helped Edwin Hubble settle a great debate in astronomy. Stocktrek Images via Getty Images A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known ...

The Milky Way nebula RCW 36 resembles a stunning cosmic bird of prey in an incredible Very Large Telescope image.

This NASA/ESA Hubble Space Telescope image features a dusty yet sparkling scene from one of the Milky Way’s satellite galaxies, the Large Magellanic Cloud. The Large Magellanic Cloud is a dwarf galaxy ...

A rare black moon will happen tonight Aug. 22-23. A seasonal black moon happens every 33 months. Since a black moon is a new moon, you might be able to spot the Milky Way and the dumbbell nebula. A ...

Give them a constellation prize. A group of international scientists discovered three ultra-massive “Red Monster” galaxies capable of forming their own stars faster than the average nebula. The ...

An 8th-grade astrophotographer from Apple Valley captured a stunning image of the Bubble Nebula, 7,000 light-years away.

Astrophotographer Emil Andronic captured a gorgeous blue reflection nebula glowing inside the red clouds of Orion's Head in the constellation Orion.

For the first time, the Tibet ASγ Experiment has successfully measured magnetohydrodynamic (MHD) turbulence on scales below one parsec (approximately 3.3 light-years) within the gamma-ray halo ...

(THE CONVERSATION) A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by ...