I’ve spent much of my long life studying — and trying to understand — the history of the universe. Along the way, I have been constantly reminded that science is essentially international: Science ...

New observations support the idea that hot, diffuse threads of gas called cosmic filaments connect clusters of galaxies ...

A vast filament of gas stretching across the cosmos may help solve the mystery of the Universe’s missing matter. Astronomers ...

A new composite image of the Andromeda Galaxy is offering an unprecedented view of our closest spiral galactic neighbor.

NASA has released a breathtaking new image of the Andromeda Galaxy, our closest galactic neighbor. Also known as Messier 31, or M31, Andromeda is located about 2.5 million light-years from Earth.

The Sombrero Galaxy is too faint to see with the naked eye but easily visible through a modest amateur telescope, appearing ...

Sauk Prairie will get a glimpse of one of the two eclipses that will occur over the next thirty days. The total solar eclipse ...

Compact ruddy galaxies seen by the James Webb telescope confound astronomers. Having very little spin at birth may explain the galaxies’ small sizes.

Hubble spotted a rare off-center black hole shredding a star, revealing the first optical discovery of a wandering ...

Caltech’s Katie Bouman explains how the Event Horizon Telescope Collaboration captured the first imager of the Sagittarius A* ...

The Sagittarius A* supermassive black hole at the core of the Milky Galaxy may be "warping the spacetime surrounding it into ...