An unexpected monster black hole was found hiding inside one of the Milky Way's tiniest neighbors, rewriting what scientists ...

Sunspot AR3234 blasted an X2-class solar flare. NASA's Solar Dynamics Observatory captured the fireworks in multiple ...

Sunspot AR3229 erupted with an X2-class solar flare. NASA's Solar Dynamics Observatory captured the fireworks in multiple ...

A couple months back, astronomers officially confirmed the existence of “Betelbuddy,” Betelgeuse’s long-suspected companion ...

Comet 3I/ATLAS nears the sun Oct. 29. Experts say it's natural, despite viral alien theories. Here's how to see it from ...

Small and unassuming, Segue 1 is a nearby dwarf galaxy containing only a handful of stars—too few to provide the gravity ...

Kluger co-authored the book Lost Moon: The Perilous Voyage of Apollo 13 with American astronaut Jim Lovell in 1994. The book ...

Students at i3 Academy got a closer look at the stars Wednesday as the U.S. Space and Rocket Center brought its mobile ...

What's special about Chiron's rings is that they're still forming; this marks the first time astronomers have ever seen a ...

Elizabeth C. Babcock, the founding director of the Smithsonian American Women's History Museum in Washington, D.C., returns ...

Newly discovered multi-wavelength view of a stellar eruption on a young Sun-like star is changing how we think about life's ...