When Voyager 2 flew by Neptune in 1989, it sent back images that were processed to better reveal features like bands and a dark spot. But a new study says it's actually a greener planet.

In 1989, the NASA Voyager team showed false color images of Neptune so that we could see the clouds in the atmosphere. NASA did also show the unaltered images at the same time in 1989. The research ...

In pictures of the farthest planets from the sun, Uranus looks like a pale-green orb, while Neptune usually looks much bluer. A new analysis revealed their true colors. Here's NPR's Nell ...