Astronomers have used NASA's Chandra X-ray Observatory to make the first X-ray detection of a gravitational wave source.

Astronomers have found evidence for five dual supermassive black holes in the centers of galaxies, each containing millions of times the mass of the Sun.

Astronomers have found five new supermassive black holes in the centers of galaxies.

For decades, astronomers have known about irregular outbursts from the double star system V745 Sco, which is located about 25,000 light years from Earth.

An orbiting red giant and white dwarf star system located about 25,000 light years from Earth.

X-rays emitted by a planet's host star may provide critical clues to just how hospitable a star system could be.

IC 10 is a starburst galaxy that has many new stars forming within it.

Because of its relative proximity, the giant molecular cloud W51 provides astronomers with an excellent opportunity to study how stars are forming in our Milky Way galaxy.

What would happen if you took two galaxies and mixed them together over millions of years?

In biology, "symbiosis" refers to two organisms that live close to and interact with one another. Astronomers have long studied a class of stars-- called symbiotic stars--that co-exist in a similar way.