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

Although the Earth’s been decidedly blue for 600 million years, rising populations of phytoplankton caused by rising temperatures are once again causing the world’s oceans to turn green.

Hubble Space Telescope Captures a Fascinating Cosmic Occurrence 'Blue Lurker' Star System 2,800 Light-Years From Earth In a path-breaking astronomical finding, NASA's Hubble Space Telescope unraveled ...

That’s the planet Earth, as photographed from about 3.7 billion ... In 1977, NASA launched a pair of probes intended to give Earthlings a look at the planets of our outer solar system and ...

Related: Earth from space ... in his book Pale Blue Dot (1994), Sagan's famous description of the image is just as relevant and powerful today as it was decades ago. "Look again at that ...

Blue Ghost captured the Earth image ... believed what they were looking at for the first few seconds," he said. "Everything looks healthy right now." Mashable Light Speed Want more out-of-this ...

On this day 35 years ago, NASA's Voyager 1 spacecraft took a picture that changed how we see our planet. The iconic "Pale Blue Dot" image is just as awe-inspiring today.