First sighting of Halley`s comet pushed back two centuries

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First sighting of Halley`s comet pushed back two centuries
(PhysOrg.com) — Researchers have modeled the likely path taken by Halley’s comet in the 5th century BC and compared their findings to ancient Greek texts from the period. They now suggest the ancient Greeks saw the comet, which would make the sightings over two centuries earlier than previous known observations.
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