Astronomers connect the dots between two strange doppelganger galaxies, uncovering what might be a string of galactic pearls created in a cosmic collision 8 billion years ago.
Astronomers may have found a second Neptune-size exomoon hidden in the retired Kepler space telescope’s data.
Astronomers might have spotted a stellar-mass black hole in another galaxy — but not everyone agrees with what they found.
The largest haul of fast radio burst observations ever recorded, all from a single fast radio burst, is helping astronomers understand what causes these fleeting cosmic phenomena
Astronomer and engineer George Carruthers (1939–2020) designed and built the first observatory on another world.
The astronomer who taught us we are all made of stardust has passed away after celebrating her 100th birthday on August 12, 2019.
Astronomers observing a distant galaxy have dramatically shrunk the range of possible properties of a long-predicted — but never-detected — subatomic particle.
By tracing stars in other galaxies, the Gaia satellite has helped astronomers understand the relative motions of the Milky Way's galactic siblings.