Long before humans walked the Earth, your solar system had a brush with two blazing blue stars that passed surprisingly close ...

For Earth to be born, our solar system needed certain isotopes which could only be formed by supernovae. But, shouldn't such ...

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't ...

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

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

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

The newly identified cluster of Kuiper Belt objects lies about 4 billion miles from the Sun, offering fresh clues about how ...

Using observations from both ground-based telescopes and space instruments, they were able to measure the planet's size and ...

What: Ultraviolet observations of the interstellar comet 3I/ATLAS captured by NASA’s Europa Clipper spacecraft while the ...

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

JWST observations of the ultra-hot super-Earth exoplanet TOI-561 b provide the strongest evidence to date for an atmosphere surrounding a rocky planet beyond our Solar System.

A lucky alignment of space- and ground-based telescopes has enabled researchers to nail down the mass of a rogue planet for the first time. Unlike worlds in our Solar System, rogue planets do not ...