If not in visible stars and galaxies, the most likely hiding place for the matter is in the dark space between galaxies.

This exploration examines the Eternal Universe theory, which suggests that the cosmos has no true beginning or end, ...

If you look across space with a telescope, you'll see countless galaxies, most of which host large central black holes, ...

A team of astronomers using a variety of ground and space-based telescopes including the W. M. Keck Observatory on Maunakea, ...

There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...

The filament of matter stretches 50 million light-years, and contains a row of galaxies 5.5 million light-years long that are ...

Satellite megaconstellations are increasingly impacting astronomical observations. Bright satellite streaks are compromising ...

Will the universe keep existing forever? An astrophysicist explains how scientists aren’t entirely sure, but they can make ...

FROSTI is a new adaptive optics system that precisely corrects distortions in LIGO’s mirrors caused by extreme laser power.

NASA revealed that scientists discovered sugars that are “essential” to life and a “gum-like” substance on the space rock ...

"Precision in these measurements is critical, as even subtle discrepancies could signal deviations from the model — ...