This may look like a simple circle with a blue glow around it, but it is not. This is an image of the planet Pluto with an amazing blue haze around it, formed by tiny particles called Tholins that scatter sunlight to give this amazing blue glow.
Image credit: NASA/JHUAPL/SwRI
Original source and more information: New Horizons Finds Blue Skies and Water Ice on Pluto
Image credit: NASA/JHUAPL/SwRI
Original source and more information: New Horizons Finds Blue Skies and Water Ice on Pluto
