For years, astronomers have observed the strange motion of Andromeda, the Milky Way’s closest large galactic neighbor. While ...

For more than a century, astronomers have watched in astonishment as the Andromeda galaxy ignored the grand flow of cosmic ...

A vast, flat sheet of dark matter may solve the long-standing mystery of why our neighboring galaxy Andromeda is speeding ...

NASA's Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer (SPHEREx) was built for ...

You might think galaxies can’t ever find each other in our runaway cosmos, but it turns out gravity can sometimes overcome ...

This idea is called the big bang model—which is an unfortunate name because it brings to mind a cosmos expanding like an ...

NASA's infrared telescope SPHEREx captured stunning images of interstellar comet 3I/ATLAS as it exited the solar system.

The Alpha Centaurids are active between January 31 and February 20, with peak activity on February 8. Stargazers can witness a chain of bluish or yellowish-white streaks of fire at around six meteors ...

Comet 3I/ATLAS flare shocks scientists as NASA’s SPHEREx finds water, CO2 and organics in a late outburst as it exits the ...

Scientists hope to probe the nature of general relativity through a possible pulsar found in the center of the Milky Way, ...

The existence of massive, elliptical galaxies in the early universe has puzzled astronomers for two decades. An international ...