Johnson, Michele (25 November 2013). Johnson, Michele (ed.). "A Sunny Outlook for NASA Kepler's Second Light". NASA Official: Brian Dunbar; Image credits: NASA Ames; NASA Ames/W Stenzel. NASA. Archived from the original on 18 April 2014. Retrieved 12 December 2013.
Johnson, Michele (11 December 2013). Johnson, Michele (ed.). "Kepler's Second Light: How K2 Will Work". NASA Official: Brian Dunbar; Image credit: NASA Ames/W Stenzel. NASA. Archived from the original on 18 April 2014. Retrieved 12 December 2013.
Johnson, Michele (25 November 2013). Johnson, Michele (ed.). "A Sunny Outlook for NASA Kepler's Second Light". NASA Official: Brian Dunbar; Image credits: NASA Ames; NASA Ames/W Stenzel. NASA. Archived from the original on 18 April 2014. Retrieved 12 December 2013.
Johnson, Michele (11 December 2013). Johnson, Michele (ed.). "Kepler's Second Light: How K2 Will Work". NASA Official: Brian Dunbar; Image credit: NASA Ames/W Stenzel. NASA. Archived from the original on 18 April 2014. Retrieved 12 December 2013.