The other element of the universe is dark matter ... We're serious about this: Uranus is a unique and strange solar system planet because, unlike all the other worlds in our corner of space ...

"There are still many things related to planetary formation and the early evolution of young planetary systems that we don't understand." The discovery of an extraordinary multi-planet system has ...

The new exoplanet, Enaiposha, also known as GJ 1214 b has never been seen before and is now officially being called a "Super-Venus." ...

The mystery arose more than 20 years ago, when the Hubble Space Telescope spotted the universe's oldest known planet, which formed earlier in the universe's history than scientists thought was ...

Mars's moon Phobos is so strange that no one knows how it formed. But a forthcoming mission could solve this mystery - and a host of other puzzles connected to the solar system's deep past ...

With winds blowing at 20,500 mph, "the planet has complex weather patterns just like Earth and other planets of our own ...

Our own planet represents a tiny fraction of the peculiar phenomena that can be found lurking throughout the cosmos, and every day astronomers turn up new surprises. In this gallery, we take a look at ...