Nasa released video on September 13 showing the earth pulling off the ultimate photobomb as it passed across the field of vision of the Solar Dynamic Observatory (SDO) completely blocking the observatory's view of the moon and sun together.

Nasa said in a statement on social media that although the SDO sees dozens of Earth eclipses and many lunar transits each year this is the first time the two have coincided.

The orbit of the SDO normally gives Nasa an unobstructed view of the sun, but the 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.

Nasa also said that the during these 'phases' the Earth blocks the SDO's view of the sun for anywhere from a few minutes to over an hour each day'.

Consequently the outline of the Earth looks fuzzy while the moon's is 'crystal-clear'.

NASA stated on their website that the reason for this is 'while the planet [Earth] itself completely blocks the sun's light, Earth's atmosphere is an incomplete barrier blocking different amounts of light at different altitudes'.'