A strange new conception of how time warps across the universe does away with cosmology's most mysterious entity, dark energy ...

Every year since 2007, people have been urged to switch off their lights in a symbolic show of support for environmental ...

Getty Images A seven-luminaries-deep parade of planets will line up and light up the night sky this week ... the closer you get to dark sky communities and the farther away you get from light ...

"The rocket's frozen exhaust plume appears to be spinning in the atmosphere and reflecting the sunlight, causing it to appear ...

Since 2007, millions around the world have taken part in Earth Hour, switching off their lights to save energy and reduce ...

Dark energy, the mysterious force thought to be driving the ever-faster expansion of the universe, appears to be changing ...

A good pair of binoculars can help stargazers get the most out of the night sky. Find out ... reacting to bright and dark. But it's your brain that builds your moving picture of the world.