Hello, world! The ultimate selfie

On July 6, a new satellite sent the first photos of Earth's entire sunlit face since the famous "Blue Marble" shot taken by Apollo 17 astronauts in 1972. All similar pictures since then have been several images stitched together. Locked in a spot a million miles above the Earth, the new spacecraft, the Deep Space Climate Observatory (DSCOVR), can capture new images every other hour. But DSCOVR isn't up there just to make pretty pictures, and it certainly isn't alone.

A stand-alone graphic.