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

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

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 ...

Most of the long-period comets in the Solar System come from the outer Oort Cloud. The inner region is much more stable. It's ...

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

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

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.

The Oort cloud began as the unused remnants of the solar system's giant planets (Jupiter, Neptune, Uranus and Saturn) after their formation 4.6 billion years ago. Some of these remnants are so ...

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 ...