Newly discovered black holes in dwarf galaxies shed light on the origin of our galaxy's central supermassive black hole.

The Andromeda galaxy, our Milky Way's closest neighbor, is the most distant object in the sky that you can see with your unaided eye.

A unique new instrument, coupled with a powerful telescope and a little help from nature, enables scientists to peer into galactic nurseries

As astronomers look out at the distant cosmos, it’s only natural that they would also look inward, to the center of our own Milky Way.

Signs of a planet transiting a star outside of the Milky Way galaxy may have been detected for the first time.

An international team of astronomers has spotted the most distant astronomical object ever: a galaxy some 13.5 billion light-years away.

The galaxy, dubbed Alcyoneus, is a large radio galaxy that spans 16.3 million light-years or roughly 150x the span of the Milky Way galaxy.

Astronomers have reported the discovery of a structure thought to be a "protocluster" of galaxies 11 billion light-years from Earth.

One of the youngest planets ever found around a distant infant star has been discovered by an international team of scientists.

A planet transiting a star outside of the Milky Way galaxy may have been detected for the first time by the Chandra X-ray Observatory.