Our solar system's famous "invader" might be as old as the Milky Way itself.

Astronauts aboard NASA’s Artemis II mission captured a stunning image of the Milky Way from deep space during their return ...

The temperature difference is not subtle. One side of the Milky Way’s outer halo runs noticeably hotter than the other, a ...

A new NASA spacecraft has started tracking the particle streams that can make a massive solar flare dangerous while mapping ...

New evidence suggests that the famous interstellar traveler may be so old that its home system no longer exists.

Nasa's Artemis II astronauts have returned a stunning Earthrise image. The crew also photographed the Milky Way. Their lunar ...

The crew of the Artemis II mission is homeward bound, following their record-breaking journey around the moon.

It's been 20 years since Pluto was declassified as the ninth planet in our solar system, and many people wish it had never ...

The Rubin Observatory has again shown its capabilities, discovering 11,000 new celestial bodies. Astronomers expect further ...

Amid what some call a new space race, the historic journey around the moon tested a spacecraft that had never before been ...

When to see NASA’s Artemis astronauts splashdown after their 10-day moon mission, but not before their Orion spacecraft heats to 5,000°F during a 16-minute blackout.

NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen splashed down at 5:07 p.m. PDT Friday off the coast of San Diego, completing a ...