The fossils offer a rare glimpse into a cataclysmic event that brought a sudden end to the greatest explosion of life in our planet's history.

Add Yahoo as a preferred source to see more of our stories on Google. This rogue planet likely formed within a traditional planetary system before gravitational interactions—perhaps with a massive ...

Earth and Mars in comparison. Mars has only about 10.7 percent of earth's mass but is roughly half its radius. Mars remains a true puzzle, but not for the reasons most people would think. Sure, ...

New simulations show red planet affects Milankovitch cycles that shape how solar energy is distributed on Earth over millions ...

Astronomers have spotted a lonely world roughly the size and mass of Saturn, drifting through the Milky Way without a star to orbit. The discovery turns a once theoretical curiosity into a concrete ...

Astronomers have signalled the discovery of a planetary body roaming the Milky Way that is not gravitationally bound to the Sun or any other star. The entity is termed a free-floating planet, a class ...

The origin of super-Earths and sub-Neptunes has been revealed in a system of four young planets that are dramatically losing ...

arXiv:0906.2780: The GJ 581 planetary system was already known to harbour three planets, including two super-Earths planets which straddle its habitable zone. We report here the detection of an ...