Well this is surely definitive proof that there is life on Mars. (Editor's Note: THIS IS A JOKE. WE ARE JOKING.)
NASA's Curiosity Rover took an image of the Red Planet and captured a shape that bears a resemblance to a mysterious ghost lady walking on the planet's surface. The level of resemblance is almost certainly relative to your desire to believe in extraterrestrial life.
Take a look at the full raw image below, available within Curiosity's enormous collection of images.
UFO Sightings Daily, the website that brought attention to the image, says that the shape "looks like a woman partly cloaked."
Perhaps it's a cloaked ghost Martian woman, perhaps it's a statue left over from a once great society, perhaps it's a piece of dirt.
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