The Blue Marble.Original caption: "View of the Earth as seen by the Apollo 17 crew traveling toward the moon. This is the first time the Apollo trajectory made it possible to photograph the south polar ice cap.
The yellowish hue of giant star Antares shines to the right of the Milky Way's bulge. Higher still is bright planet Saturn, near the right edge. Seen from Istra, Croatia, the Lyrid meteor's greenish glow reflects in the waters of the Adriatic Sea.
This view of the three left wheels of NASA's Mars rover Curiosity combines two images that were taken by the rover's Mars Hand Lens Imager on September the day of Curiosity's work on Mars. In the distance is the lower slope of Mount Sharp.
Comet McNaught, the Great Comet of grew a spectacularly long and filamentary tail. The magnificent tail spread across the sky and was visible for several days to Southern Hemisphere observers just after sunset.
A still image taken from a NASA movie of the sun based on data from NASA's Solar Dynamics Observatory (SDO), showing the wide range of wavelengths, invisible to the naked eye, that the telescope can view. Photograph by NASA Goddard Space Flight Center/EPA