Title : Documentary national geographic ♦ Amazing about Planet Mercury Venus ♦ Documentaries Duration : 46:25 Posted : 25 Mar 2016 - 05:05
Documentary national geographic ♦ Amazing about Planet Mercury Venus ♦ Documentaries
Amazing about Planet Mercury Venus Documentary national geographic Mercury is the closest planet to the Sun and due to its proximity it is not easily seen except during twilight. For every two orbits of the Sun, Mercury completes three rotations about its axis and up until 1965 it was thought that the same side of Mercury constantly faced the Sun. Thirteen times a century Mercury can be observed from the Earth passing across the face of the Sun in an event called a transit, the next will occur on the 9th May 2016. More keywords you can search easier: Documentaries Documentary top 10 documentary best documentaries online hbo documentaries good documentaries national geographic history documentaries Documentary films National Geographic Documentaries national geographic top documentaries national geographic channel national geographic documentaries
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