Long ago, Mars teemed with water.New imagery captured by the European Space Agency's Mars Express orbiter depicts the planet's once watery past. The spacecraft,...
It doesn't have the name recognition of Halley's Comet, but this enormous snowball zipping through space has fascinated at least one astronomer night after...
Folks, have you thanked the moon lately?The large, cratered orb — weighing in at some 100,000,000,000,000,000,000,000 pounds — serves us greatly. Its potent gravity...
A space reconnaissance mission has returned unprecedented imagery of a metal hunk zooming around Earth.The discarded three-ton rocket, a robust piece of space junk...
