Astronomers have finally pinned down the mass and distance of a lonely world that drifts through the galaxy without a parent ...

Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, ...

Astronomers at the Center for Astrophysics | Harvard & Smithsonian have captured what may be the biggest planet-forming disk ...

Explore the vast distances between planets and objects in our solar system, and why most of the space around us is a wide ...

Here's how the astronomical phenomenon influences our planet—from the length of our seasons to the way Earth moves through ...

Thanks to Einstein’s relativity, time flows differently on Mars than on Earth. NIST scientists have now nailed down the ...

Interstellar object 3I/ATLAS is confirmed as a natural comet from beyond our solar system, posing no threat to Earth despite ...