When the solar system formed, rocks (and other dense, heavy materials in the dust cloud such as iron and uranium) tended to gather closer to the Sun, and these materials combined together to form ...

The Oort cloud is a shell of icy objects that forms the very outskirts of our Solar System. Recently, a group of researchers ...

The solar system could be packed with 1 million alien visitors, space rocks shaken away from our cosmic neighbor Alpha ...

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it ...

The discovery that helium and iron can mix at the temperatures and pressures found at the center of Earth could settle a long ...

Long after the planets of the Solar System formed, catastrophic collisions continued, with a climax about 4 billion years ago during an interval called the Late Heavy Bombardment. The scars of ...

Astronomers have discovered that the Solar System traversed the Orion star-forming complex, a component of the Radcliffe Wave galactic structure, approximately 14 million years ago. This journey ...

Scientists from UNSW Sydney have located a potential new exoplanet—a planet that orbits a star outside of our solar ...

Millions of years ago, our Solar System traveled through a densely populated galactic region and was exposed to increased ...

An alignment of seven planets will appear, whether by the naked eye or with the use of a telescope, this month in the U.S. Here's how to spot it.

Experts believe the asteroid was once part of a larger parent body that existed about 4.5 billion years ago, shortly after the formation of the solar system. This parent body would have been ...