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comet

Halley's Comet

Overview Fast Facts History & Timeline Cosmic Q&A Comparison Image Gallery

240 BCE
First recorded observation by Chinese astronomers
1705
Edmond Halley predicts its return
1758
Comet returns as predicted
1986
Giotto spacecraft flyby

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Learn the Science: Read our complete educational breakdown on Comets.Historical Archive: Track past occurrences of this cosmic phenomenon.Live Telemetry: Jump to the real-time Kp index & solar wind command matrix.

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