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some different comets appearing several times the same comet appearing at different time three different comets appearing three times several comets appearing at the same time
Newton figured out the orbit of the comet. Halley figured out the orbit of the comet first. Newton gave Halley some help. Halley died before 1758.
some different comets appearing several times the same comet appearing at different time three different comets appearing three times several comets appearing at the same time
Newton figured out the orbit of the comet. Halley figured out the orbit of the comet first. Newton gave Halley some help. Halley died before 1758.
some different comets appearing several times the same comet appearing at different time three different comets appearing three times several comets appearing at the same time
Halley and other scientists the orbit of a comet Newton and Halley Halley and his discovery
some different comets appearing several times the same comet appearing at different time three different comets appearing three times several comets appearing at the same time
Halley and other scientists the orbit of a comet Newton and Halley Halley and his discovery
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