Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...

It is not often that all the planets in the Solar System other than ours are lined up across the night sky for us to see.

Why is Pluto no longer a planet? Discover the real reason behind Pluto’s reclassification as a dwarf planet and the science that led to this change.

These features are not seen in any previously identified exoplanet ... and its extreme lack of hydrogen expands our understanding of the diversity of planets (just like this strange object in our ...

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

The rare astronomical event will see Mars, Jupiter, Uranus, Venus, Neptune, Mercury and Saturn appear at the same time, ...

The organic ingredients to life, hints to where Earth’s water came from, and the fundamental building blocks of our planet ...

'Planet parade' isn't a technical term in astronomy but it is one widely used to describe the alignments of planets. The ...

Scientists have been unable to determine whether the dwarf planet’s organics were produced by its own chemical processes or ...