Visualized: Mercury

It may look like a spotty, monochromatic water melon, but we're taking NASA's word on this one -- the image above is the very first taken from an orbiting spacecraft of our solar system's innermost planet. Mercury has been snapped by NASA's MESSENGER probe, which is currently preparing itself to start on its elliptical trajectory around the planet and commence collecting data about it in earnest. Hit the links below to learn more about this bold exploration project.