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Mohammad ðŸŽðŸŽ©
@mohammed1990
Halley's Comet is visible to the naked eye from Earth once every 75-76 years. But before studying this comet, scientists did not know that comets can have a regular orbit. Have you ever seen a comet in the night sky?
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HadiðŸŽðŸŽ©
@hadi1990
It was very good ðŸŽ
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