These images from NASA's Spitzer Space Telescope of Comet ISON were taken on June 13, 2013, when ISON was 312 million miles (502 million kilometers) from the sun. The lefthand image shows a tail of fine rocky dust issuing from the comet, blown back by the pressure of sunlight. The image at right shows a neutral gas atmosphere surrounding ISON, likely created by carbon dioxide fizzing off the comet at a rate of 2.2 million pounds per day.
Barred spiral edge-on galaxy NGC5746 is located 95 million light years from Earth in the constellation Virgo. Astrophotographer Terry Hancock from Western Michigan teamed up with former NASA scientist Fred Hermann from Huntsville, Alabama to take this photo. The image was taken March 19, 2013 from Bridgeton, Michigan.
This NASA Hubble Space Telescope image of Comet ISON was taken on April 10, 2013, when the comet was slightly closer than Jupiter's orbit at a distance of 386 million miles from the sun (394 million miles from Earth).
An annular eclipse is seen beside the Tokyo Sky Tree tower in Tokyo's Sumida Ward at 7:34 a.m. on May 21. This composite photo was created using different exposure levels taken at the same place. (Satoru Sekiguchi)
A decade of incredible photos from Spitzer Space Telescope
The Sombrero Galaxy Named after its appearance in visible light to a wide-brimmed hat -- this galaxy is in fact two galaxies in one. It is a large elliptical galaxy (blue-green) with a thin disk galaxy (partly seen in red) embedded within. Previous visible-light images led astronomers to believe the Sombrero was simply a regular flat disk galaxy. CREDIT: NASA/JPL-Caltech