The idea is that the gravitational pull of planets can attract dark matter particles. The physics behind it are complex, but scientists are working on it, including trying to estimate its density ...

Water isn't just delivered to planets by comets and asteroids — it can also be forged as worlds form, a new study finds. For decades, scientists have debated the origin of Earth's water. One ...

Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to form in ...

A dramatic life-and-death game of planetary survival is taking place inside a gigantic cloud of gas and dust 1,500 light-years from Earth, and the outcome could have far-reaching implications for the ...

A visible line of planets has for weeks been the talk of astronomers and hobbyist stargazers who have sought to catch a sight of our solar system's worlds. Online chatter and a frenzy of media ...

Stargazers in California and worldwide will be treated to a planet parade in February when Earth's seven sister planets align. You'll need high-powered binoculars or a telescope to see Neptune and ...