The giant planets weren't always where we find them today. Jupiter, Saturn, Uranus and Neptune formed in a more compact ...

A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will in a matter of days come as close to our planet ...

For every rule in the cosmos, there is a spectacular exception. While most planets orbit in a neat plane, Pluto tumbles at a ...

The interstellar comet 3I/ATLAS will reach its closest point to Earth on December 19, giving astronomers a closer look at the ...

Hot Jupiters were once cosmic oddities, but unraveling how they moved so close to their stars has remained a stubborn mystery ...

NASA’s Bennu samples have revealed an unexpected mix of sugars, sticky 'gum-like' material and ancient stardust. Scientists say the discovery could reshape what we know about the early Solar System an ...

A vast ring of rocky leftovers between Mars and Jupiter, the asteroid belt preserves clues to how the planets — and Earth ...

Mercury is the innermost and smallest of the eight major planets in our Solar System, orbiting closest to the Sun. Though only slightly larger than Earth’s Moon, Mercury endures some of the most ...

Scientists studying samples from the Bennu asteroid located not too far from Earth continue to find clues as to how life ...

Interstellar comet 3I/ATLAS, a visitor older than the Sun, has stunned scientists with a colossal, puzzling X-ray cloud ...

Samples collected from the asteroid Bennu are continuing the shed light on the origins of the solar system and how life ...