Will the Milky Way and Andromeda galaxies collide in several billion years? The odds have changed with a new study using ...

The Chandra X-ray Observatory captured imagery of a galaxy that "appears to have pulled in and assimilated all of its former ...

First-day-of-issue dates and locations through March 2026 also revealedWASHINGTON, Dec. 12, 2025 /PRNewswire/ -- The U.S.

NASA’s Chandra Observatory has produced vivid, energy-segmented X-ray maps of galaxy clusters, revealing shock waves, cooling ...

Astronomers are learning more about the origins of supermassive black holes after new data is revealed from a 20-year-long ...

NASA’s Chandra telescope uses a new X-arithmetic method to compare X-ray energies and show how supermassive black holes shape galaxy clusters and galaxy groups, revealing differences in gas movement a ...

The X‑arithmetic technique offers a powerful new way to map the physics of other galactic structures across the universe and ...

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches Earth in December 2025.

The space agency said supernovas typically brighten rapidly over a period of several weeks before they slowly start to dim. This example, however, took months to ...

Most smaller galaxies may not have supermassive black holes in their centers, according to a recent study using NASA's Chandra X-ray Observatory. This contrasts with the common idea that nearly every ...

The Hubble Space Telescope has turned its sharp eye toward a ghostly swirl of stars and gas known as the "Lost Galaxy," given ...

New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from ...