Our galaxy's supermassive black hole is famous for being one of the dimmest in the universe. Evidence from a new space ...

A massive filament of gas and dust, designated X7, has been elongated during its long approach to the Milky Way galaxy's ...

The Hubble Space Telescope has found evidence of a "wandering" black hole about 5000 light years away in the Milky Way galaxy ...

The supermassive black hole at the center of the Milky Way apparently flared up dramatically relatively recently. An echo of ...

Hypervelocity stars have, since the 1920s, been an important tool that allows astronomers to study the properties of the ...

The system is known as J1218/1219+1035, and is located 1.2 billion light-years from us. The three nuclei of the three ...

On Jan. 15, 2025, the Gaia spacecraft took its last image. Then the craft ran a final round of engineering tests, fired its ...

Do all stars exist in galaxies, or do some exist in intergalactic space?Thomas GriffilthAtlantic City, New Jersey Nearly all ...

The galaxy cluster appears hotter and more mature than it should for its young age, challenging what we think we know about ...

An inexplicably hot, fast-growing cluster of galaxies in the early universe has scientists questioning theories of galactic ...

Ripples in space and time constantly churn through the universe, forming what's called the "gravitational wave background." A new study examines why these waves are so much bigger than scientists once ...

Measuring the energy of hot gas within a remote group of galaxies reinforces the importance of giant black holes in forming ...