In this special Hubble image 23 years in the making, the sparkling spiral galaxy UGC 10043 reveals the secrets of its ...

Surrounded by glowing discs of swirling gas, quasars emit immense light that can be seen across vast cosmic distances.

The night sky has always played a crucial role in navigation, from early ocean crossings to modern GPS. Besides stars, the United States Navy uses quasars as beacons. Quasars are distant galaxies with ...