Earth's oceans may have been green for billions of years until the first photosynthetic organisms flooded our atmosphere with oxygen.

Keep reading to learn more about Earth's different layers, its atmosphere, and what makes the "blue planet" unique. Earth is made out of different layers, and those layers get hotter and more ...

Although the Earth’s been decidedly blue for 600 million years, rising populations of phytoplankton caused by rising ...

Firefly Aerospace's Blue Ghost lander may have only just ... If you take a closer look at Earth reflected in the lander's ...

While it may seem crazy, the idea that millions of years ago the Earth looked purple is gaining traction. Yes, you read that right, aliens might well have known us as ‘The Purple Planet’.

The Firefly Aerospace Blue Ghost mission is preparing for its historic lunar landing attempt this week, but as it orbits around the moon the spacecraft is continuing to capture incredible footage ...

On the way to investigate the scene of a historic asteroid collision, a European spacecraft swung by Mars and captured rare ...

Related: Earth from space — Incredible images of our planet from above Writing in his book Pale Blue Dot (1994), Sagan's famous description of the image is just as relevant and powerful today as ...

Then on Thursday, the lander, named Blue Ghost, fired its engines ... apogee – the point when it is furthest from Earth in its orbit of the planet – as it prepared to enter the moon's orbit.