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'.

Scientists discovered a phenomenon created by a black hole merger. They believe the merger took place when two black holes collided as they passed by each other, creating something we've never seen ...

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 ...