Speeding around the Earth at 28,000 km/h, NASA astronaut Nichole Ayers captured an incredible view of a phenomenon known as a red sprite. Here's the science behind this 'transient luminous event'.

Decades ago, Albert Einstein predicted gravitational lenses as part of his theory of general relativity. Another physicist at the time predicted that if the Earth and the gravitational lens, as well ...

A pod of orcas hunting off the coast of Southern California over the last month has given locals a rare opportunity to learn more about these clever and efficient animals — and they just might be ...

BAY AREA, Calif. (KRCR) — An incredible phenomenon has happened again in nature -- another rare occurrence of a blended raptor family in California. A baby red-tailed hawk has been seen in a bald ...

Billions of cicadas are expected to start swarming in more than a dozen states in the coming weeks, and while the strange occurrence may be a nuisance for many, scientists say the activities of the ...

The national parks of the United States are home to some of the last remaining havens of clear night skies filled with celestial wonders. Under the NPS organic act, the National Park Service protects ...