Artemis II hit a key milestone Thursday when Orion ignited its engine, propelling the crew on a trip that will reach deeper ...

See the moment CNN’s space reporters react to the launch of Artemis II on its historic mission towards the moon.

Scientists say they have uncovered new clues in Australia about when plate tectonics began on Earth, the only known planet to have the geological process.

(CNN) — Time and time again, Hollywood has embraced an imminent apocalypse, as films like “2012” beamed the fictionalized end of the world onto the big screen. Fortunately, the scientific logic for ...