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.
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)