The Lunar Reconnaissance Orbiter turned its cameras toward home from a distance of over 231,000 miles away on June 12, 2010. Looking back at Earth in this way helps to calibrate its Wide Angle Camera, and while doing so two images were taken with its Narrow Angle Camera and combined to create this beautiful black-and-white portrait of our planet. Australia can be seen hugging the lower left edge, and beneath the center of the cloud-covered area at top right lies the north pole. Hong Kong is near the center of the image.
Click for a larger version, or read more about this image on NASA’s LRO mission page here.
Image credit: NASA/Goddard/Arizona State University