This magnificent image is a portrait of the Earth taken in one single shot. At 121 megapixels, it is the highest resolution image of the planet ever and was taken by the geostationary Russian weather satellite the Electro-L.
One of three Expedition 37 crew members aboard the International Space Station on Sept. 2013 photographed this high oblique night image showing dozens of major cities and communities on the east coast of the U.
Callisto, Jupiter’s second largest moon, is roughly the same size as the planet Mercury but only about a third of the mass. It is the outermost of Jupiter’s four large Galilean satellites and orbits at an isolated km from the planet.