The Oort Cloud is a theorized invisible spherical shell that surrounds the Sun.

An unusual concentration of impact craters suggests that they may have been caused by the breakup of an asteroid that created ...

An international team has successfully demonstrated that 70% of all known meteorite falls originate from just three young asteroid families. These families were produced by three recent collisions ...

Meteorites - rocks that fall to Earth from space - have pelted our planet from its birth about 4.5 billion years ago to today ...

The Tsuchinshan-ATLAS comet is visible from the Northern Hemisphere this month—and won't be back for another 80,000 years.

Just a few smashups in the asteroid belt may account for 70 percent of Earth’s meteorites, limiting what’s known about our solar system’s history.

Atlas, a rare and bright comet, should be visible through October, weather permitting. The comet is expected to be visible to ...

The human mind may find it difficult to conceptualize: a cosmic cloud so colossal it surrounds the sun and eight planets as ...

The spherical shell known as the Oort Cloud is, for all practical purposes, invisible. Its constituent particles are spread so thinly, and so far from the light of any star, including the Sun, that ...

Scientists have discovered that life-forming compounds on Earth were likely delivered by ancient meteorites composed largely ...

After playing a weeks-long game of hide-and-seek with skywatchers in the Midlands, a rare comet is likely to finally reveal ...