Photobomb (definition):

a photograph that has been spoiled by the unexpected appearance of an unintended subject in the camera’s field of view as the picture was taken.

NASA's Earth / Moon Photobomb

NASA’s Earth / Moon Photobomb

Sep 14, 2015

On Sept. 13, 2015, the view of the NASA’s Solar Dynamics Observatory, or SDO, of the sun was photobombed not once, but twice as the moon came into SDO’s field of view.  The moon was on a path to cross the sun when the Earth entered the picture, blocking SDO’s view completely. When SDO’s orbit finally emerged from behind Earth, the moon was just completing its journey across the sun’s face.

Earth eclipses and lunar transits are not unusual events for the SDO, however, this is the first time that the two have coincided.  So that is a rare event! SDO’s orbit normally allows for an unobstructed view of the sun, but Earth’s revolution around the sun means that SDO’s orbit passes behind Earth twice each year, for two to three weeks at a time. When that happens, Earth blocks SDO’s view of the sun for anywhere from a few minutes to over an hour each day.

The outline of the Earth ends up looking fuzzy and out of focus, while the moon’s outline is crystal-clear.  This occurs because although the planet itself completely blocks the sun’s light—Earth’s atmosphere is an incomplete barrier and blocks different amounts of light at different altitudes. The moon, however, has no atmosphere, so during the transit we can see the crisp edges of the moon.

 

Citation styles

APA style
NASA Earth and Moon Photobomb. (2015, September 15). In ClassBrain Teens. Retrieved 13:57, April 26, 2017, from http://classbrain.net/teens/nasa-earth-and-moon-photobomb/
MLA style
Cynthia Kirkeby, “NASA Earth and Moon Photobomb.” ClassBrain Teens. 15 September 2015, 13:10 UTC. . 26 Apr 2017 <http://classbrain.net/teens/nasa-earth-and-moon-photobomb/>.
MHRA style
Cynthia Kirkeby, 'NASA Earth and Moon Photobomb', ClassBrain Teens, 15 September 2015, 13:10 UTC, <http://classbrain.net/teens/nasa-earth-and-moon-photobomb/> [accessed 26 April 2017]
The Chicago Manual of Style
Cynthia Kirkeby, “NASA Earth and Moon Photobomb.” ClassBrain Teens, http://classbrain.net/teens/nasa-earth-and-moon-photobomb/ [accessed April 26, 2017].
CBE/CSE style
Cynthia Kirkeby, NASA Earth and Moon Photobomb [Internet]. ClassBrain Teens; 2015 September 15, 13:10 UTC [cited 2017 Apr 26]. Available from: http://classbrain.net/teens/nasa-earth-and-moon-photobomb/.
Bluebook style
NASA Earth and Moon Photobomb, http://classbrain.net/teens/nasa-earth-and-moon-photobomb/ (last visited Apr. 26, 2017).
AMA style
Cynthia Kirkeby, NASA Earth and Moon Photobomb. ClassBrain Teens. September 15, 2015, 13:10 UTC. Available at: http://classbrain.net/teens/nasa-earth-and-moon-photobomb/. Accessed April 26, 2017.

Citation styles

APA style
NASA Earth and Moon Photobomb. (2015, September 15). In ClassBrain Teens. Retrieved 13:57, April 26, 2017, from http://classbrain.net/teens/nasa-earth-and-moon-photobomb/
MLA style
Cynthia Kirkeby, “NASA Earth and Moon Photobomb.” ClassBrain Teens. 15 September 2015, 13:10 UTC. . 26 Apr 2017 <http://classbrain.net/teens/nasa-earth-and-moon-photobomb/>.
MHRA style
Cynthia Kirkeby, 'NASA Earth and Moon Photobomb', ClassBrain Teens, 15 September 2015, 13:10 UTC, <http://classbrain.net/teens/nasa-earth-and-moon-photobomb/> [accessed 26 April 2017]
The Chicago Manual of Style
Cynthia Kirkeby, “NASA Earth and Moon Photobomb.” ClassBrain Teens, http://classbrain.net/teens/nasa-earth-and-moon-photobomb/ [accessed April 26, 2017].
CBE/CSE style
Cynthia Kirkeby, NASA Earth and Moon Photobomb [Internet]. ClassBrain Teens; 2015 September 15, 13:10 UTC [cited 2017 Apr 26]. Available from: http://classbrain.net/teens/nasa-earth-and-moon-photobomb/.
Bluebook style
NASA Earth and Moon Photobomb, http://classbrain.net/teens/nasa-earth-and-moon-photobomb/ (last visited Apr. 26, 2017).
AMA style
Cynthia Kirkeby, NASA Earth and Moon Photobomb. ClassBrain Teens. September 15, 2015, 13:10 UTC. Available at: http://classbrain.net/teens/nasa-earth-and-moon-photobomb/. Accessed April 26, 2017.