The greater the cosmic-ray energy, the greater its interaction cross-section, meaning it is more likely to interact with CMB ...

For decades, astronomers have discovered hundreds of protoplanetary disks—structures believed to represent the early stages ...

The Milky Way is making its first major appearance of the year in the Northern Hemisphere, and it’s set to be visible across ...

There are few more impressive sights than the arc of the Milky Way spanning the night sky, but skywatchers don't always know ...

In Chile's Atacama Desert, the European Southern Observatory is constructing the Extremely Large Telescope (ELT), poised to ...

As snow melts from Colorado’s peaks and trees and flowers begin to blossom in the valleys, dozens of species of birds are ...

Have you ever had an X-ray taken of your bones? Well, so has the Milky Way. NASA's Chandra X-ray Observatory regularly images ...

An Egyptian sarcophagus shows the sky goddess ... to bisect the Milky Way’s vast expanse of diffuse light. Egyptian ...

James is a published author with four pop-history and science books to his name. He specializes in history, strange science, ...

Hidden away in the darkest corners of Earth’s atmosphere, a faint green airglow quietly paints the night sky, far from the ...

The Milky Way may have been painted across ancient Egyptian coffins thousands of years ago—and now, one scientist believes he ...

The town of Jackson and Teton County became official International DarkSky Communities for efforts to reduce light pollution.