One summer night in 1877, American astronomer Asaph Hall was looking through his telescope in Washington, D.C. Mars was at its closest point to Earth in its orbit, and Hall had one question on his ...

Earth lives in a shooting gallery, with small and large rocky bodies in abundance in our solar system. Are we in danger of ...

At some 887 pages, the legislation is a sprawling collection of tax breaks, spending cuts and other Republican priorities, ...

At some 940-pages, the legislation is a sprawling collection of tax breaks, spending cuts and other Republican priorities, ...

In a world obsessed with the apocalyptic hellfire of ‘carbon’ and the terror of an imperceptibly warmer climate nowhere near ...

At some 940-pages, the legislation is a sprawling collection of tax breaks, spending cuts and other Republican priorities, ...

The interior of the sun is threaded with huge ropes and tubes of magnetic fields, loaded with very hot plasma—gas so hot its ...

From a bar in the clouds to finding more water from the Moon, outer space is constantly surprising us. A vast universe Think ...

The planet Jupiter has no solid ground – no surface, like the grass or dirt you tread here on Earth. There’s nothing to walk on, and no place to land a spaceship. But how can that be? If Jupiter doesn ...

The Griffith Observatory in California had a great view of the Mars-Moon occultation. See the Red Planet slip behind the moon ...

The new images by the Curiosity rover on Mars show "dramatic evidence" of ancient groundwater in crisscrossing low ridges, ...

NASA's Perseverance rover is digging deeper into Mars' geologic past as it begins grinding into rock surfaces to expose ...