Dark matter halos are everywhere in the universe, yet no telescope can see them. These vast, invisible structures surround ...

The space between galaxies is not empty. In a new map of the early universe, those “blank” stretches take on a faint, hydrogen-blue glow that had mostly escaped surveys until now. Astronomers working ...

Astronomers seem to have pulled back a new curtain on the early universe. A massive 3D map now shows a "sea of light" that had been mostly invisible until recently. It’s not galaxies alone lighting up ...

DESI (Dark Energy Spectroscopic Instrument) has, in just five years, completed the largest and most comprehensive 3D map of the universe ever constructed, cataloging over 47 million galaxies and ...