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Discovery: Fireballs from Space. The film will tell about meteors, meteorites and comets. How humans are trying to protect the Earth from space threats.
Comets are small “dirty snowballs”, consisting of a mixture of ice, frozen gases and dust – various “building debris” left after the emergence of the solar system. Comets have three times the speed of asteroids; we can only see them when they pass near the Sun. Comet Galea is 16 km long and passes near the Sun every 76 years. Comet Galeboppe, 40
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