Nearly three-fourths of Earth is covered by oceans, making the planet look like a pale blue dot from space. But Japanese researchers have made a compelling case that Earth's oceans were once green, in ...

Earth's auroras look a bit different from above. NASA astronaut Don Pettit captured two amazing videos of our planet's ...

Astronaut Don Pettit captured the moment a vivid green aurora appeared below the International Space Station orbiting the earth. Posting to X, Pettit explained they rotated 180 degrees and flew ...