"Space Explorers: Blue Marble - Orbit 1" "Filmed outside the ... around the Earth at a speed of 17,500 miles per hour on a crystal-clear day." "Join NASA astronaut Megan MacArthur as she opens ...

But in a new study in Nature Astronomy, ancient blue crystals trapped in meteorites reveal what the early Sun was like. And apparently, it had a pretty rowdy start. "The Sun was very active in its ...

Here’s how it works. Ancient and rare blue crystals from the dawn of the solar system help confirm that the newborn sun was violently active, a new study reports. Astronomers previously found ...

The "Blue Marble" was the first photograph of the whole Earth and the only one ever taken by a human. Fifty years on, new images of the planet reveal visible changes to the Earth's surface.

The iconic photo, known as “Blue Marble,” was taken by NASA astronauts Eugene “Gene” Cernan, Ronald Evans and Harrison Schmitt on December 7 using a Hasselblad camera and a Zeiss lens ...

December 7 marks the 50-year anniversary of the Blue Marble photograph. The crew of NASA’s Apollo 17 spacecraft – the last manned mission to the Moon – took a photograph of Earth and changed ...