Pluto movement in one day

Videonummer 11943322
Comparison of two photographic plates showing the one day's movement of the dwarf planet Pluto against background stars. The photographs are first shown one after the other, and then shown annotated with arrows to highlight Pluto. Pluto was discovered by Clyde Tombaugh in February 1930, in a pair of photographs taken on 23rd and 29th January 1930. Tombaugh used a blink comparator, which presented two photographs of the same area of sky taken several days apart. By flicking rapidly between the two, any moving object is evident amongst the fixed stars. Pluto was deemed a planet at the time of its discovery. The discovery of numerous similar-sized bodies orbiting beyond Neptune, led to it being reclassified as a dwarf planet in August 2006. Pluto was visited by the New Horizons spacecraft on 14th July 2015.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / Lick Observatory
Modell-Rechte: nicht erforderlich
Länge: 10 Sekunden
Seitenverhältnis: 16:9
Restrictions: -

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