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4 Mar 1986
The Soviet Union's Vega 1 Space Probe began sending back images of Halley's Comet.
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10 Apr 0837
Halley's Comet made its closest approach to Earth in recorded history.
The Soviet Union's Vega 1 Space Probe began sending back images of Halley's Comet.
Halley's Comet made its closest approach to Earth in recorded history.