Скачать или смотреть Is Pluto A Planet || Discovery Of Pluto

February 18, 1930.
Once believed to be the ninth planet, Pluto was discovered at the Lowell Observatory in Flagstaff, AZ, by astronomer Clyde W. Tombaugh.
Tombaugh discovered the tiny dwarf planet using a new astronomic technique of photographic plates combined with a blink microscope.
Pluto was given the Roman name for the god of the underworld in Greek mythology due to its surface temperature of -360° F.

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