NASA’s New Horizons probe looked back to take a picture of Jupiter while on the way to accomplish its Pluto-Kuiper Belt mission. This picture was taken by the space probe’s Long Range Reconnaissance Imager (LORRI) when it was about 1.5 billion miles from Jupiter. The giant planet can be seen as a half/partial phase and two of its moons, Ganymede and Europa, are barely visible in this nine millisecond  exposure.