BERLIN – Scientists say they have detected significant amounts of molecular oxygen coming out of a comet, an unexpected find that may have implications for the search for alien life and understanding ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and Earth. The authors dubbed it Planet Y.

Astronomers have observed a solar system being formed for the first time, as hot gas condenses into solid minerals around the baby star (Picture: ESO) Astronomers have witnessed the creation of a ...

The solar system was formed 4.6 billion years ago by the explosion of a star at the end of its life cycle, according to a groundbreaking study of meteorites. Research suggests a low-mass supernova was ...

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its nebular gas had been consumed—Earth's solar system and its planets looked more ...

Typically, telescopes are synonymous with bringing far-off objects close, but the newest member of the solar system was discovered using wide-field imaging. The Subaru Telescope has spotted a distant ...

Astronomers have discovered that the Jupiter, the largest planet in our Solar System, was once so big that it could have held 2,000 Earths. Jupiter is our system's oldest planet, forming from the dust ...

New simulations suggest that Mercury's formation could be the result of a rare collision between two celestial bodies of ...