The spotted atmosphere contains a very thin layer of oxygen ions equivalent to conditions 480 kilometers above Earth. Scientists say they have discovered a faint oxygen atmosphere around Saturn’s icy moon Dione which is 5 trillion times less dense than the air at Earth’s surface. Dione’s atmosphere was detected by NASA’s Cassini spacecraft, which has been orbiting Saturn since... 

A conspiracy theorist noticed that an image in NASA’s Astronomy Picture Of The Day had noticeable Photoshop brushstrokes in it, when you turned up the contrast. Is there a mysterious object hiding near Saturn’s moons? Check out the official image of Dione and Titan, above. A YouTube user named DominatorPS3 turned up the contrast on the image, and discovered brush strokes. You can just...