Nasa astronaut releases videos of dazzling green auroras captured from space - One of the videos shows aurora in the form of ...

NASA’s oldest active astronaut just gave Earth a jaw-dropping look at one of the planet’s rarest and most beautiful phenomena ...

Earth's oceans could one day turn purple. Nearly three fourths of Earth is covered by oceans, making the planet look like a ...

Green oceans on early Earth, shaped by iron, pushed microbes to evolve light-absorbing tools that worked in green light.

The oceans wore a green hue billions of years ago and if cameras existed, Earth would have looked emerald green from up above ...

The northern lights revealed themselves to a handful of states Tuesday, but if you missed out, you still have a chance to ...

Veteran NASA astronaut Don Pettit has released breathtaking videos of green auroras captured from the International Space ...

During a brief but dramatic chapter in Earth's history about 41,000 years ago, the planet’s magnetic field nearly collapsed.