New research suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for photosynthesis.

The iridescent cloud reveals new clues about ice formation in the Martian atmosphere (no little green men, sorry).

Jupiter is the largest planet in our solar system, and the most famous aspect of this gas giant (other than its size) is the ...

When designing your dining room, one of the most important things to consider is the color of the walls. Here are five paint ...

If you're looking for a way to tell someone that they are out of this world this Valentine's day, maybe look up ...

Get up to speed on gamma rays, the radiation responsible for creating the Red Hulk in Captain America: Brave New World.

A recent video created from images captured by Curiosity shows clouds tinted red and green flowing though the sky over Mars.