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

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

Light from the half a million satellites that humanity is planning to launch into Earth's orbit in the coming years could ...

Astronomers capture the twinkle of a distant quasar, RX J1131, and reveal the secret size of a black hole's fiery corona.

Chile’s Atacama Desert is one of the darkest spots on Earth, a crown jewel for astronomers who flock to study the origins of ...

After decades of searching, astronomers may have finally stumbled upon the first moon known to exist beyond our solar ...