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Alysa429
Alysa429 Alysa429
  • 07-03-2015
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Answered

How often is Halley's Comet visible from Earth? Every 17 years Every 100 years Every 20-30 years Every 75-76 years

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kathrynleigha
kathrynleigha kathrynleigha
  • 07-03-2015

Halley's comet is visible every 75-76 years

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