A galaxy cluster containing a structure never previously seen so far from Earth has been observed by Chandra X-ray Observatory.

Dark matter is mysterious. We know that it is invisible material that does not emit or absorb any type of light, but we can detect it through the gravitational effects it has on material we can see.

Over several years, astronomers have noticed flares in X-ray light from the black hole at the center of the Milky Way.

G350.1+0.3 is a young and exceptionally bright supernova remnant located nearly 15,000 light years from Earth toward the center of the Milky Way.

Researchers have been traveling for decades to some of the coldest places on the planet to uncover some of the secrets from space that have been left behind on Earth.

Astronomers using the Chandra X-ray Observatory and ground-based optical telescopes have discovered an extraordinary galaxy cluster some 7.2 billion light years from Earth.

The Milky Way galaxy has several small satellite galaxies very close to it. One of them is called the Small Magellanic Cloud.

The galaxy cluster Abell 2052 is found some 480 million light years from Earth. At the center of Abell 2052 is a giant elliptical galaxy, and within that is a supermassive black hole.

30 Doradus is a place where stars are born literally. This region, which is also known as the Tarantula Nebula, is located about 160,000 light years from Earth.

Over three decades ago, Stephen Hawking placed, and eventually lost, a bet against the existence of a black hole in Cygnus X-1.