Astronomers have discovered a rare in-sync solar system with six planets moving like a grand cosmic orchestra, untouched by outside forces since their birth billions of years ago. The find ...

Scientists have discovered a comet traveling one way out of the solar system after a close encounter with Saturn. The comet, designated Comet A117uUD (A117uUD), was only discovered on June 14 ...

Meet the surprising, oddball worlds moving around our solar system. From meteorites that impact Earth, to a moon that orbits backwards, to an imposter lurking in the asteroid belt, a variety of ...

How our own Solar System came to be? How we could know? Telescopes, microscopes, spectrometers, and gravitational wave detectors all help to piece together the deep history of our Solar System.

What are the weirdest worlds in our solar system, and how did they come to be? From a dwarf planet that looks like a deflated football, to a tiny moon with cliffs taller than Mt. Everest ...

Pluto was reclassified as a dwarf planet in 2006. Our solar system may have a ninth planet after all, researchers say. The possibility that an additional planet may be hidden far into the solar ...