#2. The Moon came from Earth. It didn’t form beside our planet, and Earth’s gravity didn’t capture it. The latest theory says ...

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

After more than 20 years of planning and construction, the Vera C. Rubin Observatory is ready for its grand opening, and the ...

Using the James Webb Space Telescope (JWST), astronomers have peered deep into one of the Milky Way's most radiation-intense ...

In the remote outer reaches of planetary systems, far beyond the orbit of known planets, enormous and mysterious worlds ...

Wide-orbit planets are fairly common according to the study, and there's a good chance we have one of our own.

New research shows there is at least a 40% chance of the existence of Planet Nine, but scientists are still looking for ...

Tax credits for crucial clean energy and home energy efficiency projects would be phased out, albeit less quickly.

More than 150 moons orbit worlds in our solar system. Known as natural satellites, they orbit planets, dwarf planets, asteroids, and other debris. Among the planets, moons are more common in the ...

These ancient swarms, which orbit the sun alongside the giant planet, may hold clues to the solar system’s original layout. Photograph by PATRICK H. CORKERY, LOCKHEED MARTIN Launched in 2016 ...

"By studying these planets, we can better understand how planets form in general, a bit like peering into the past of our ...

An accidental discovery in an astronomy show offers researchers a new clue about the mysterious Oort Cloud, a large expanse of icy bodies revolving around the sun.