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OpenStudy (inowalst):
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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OpenStudy (kittiwitti1):
I think I'm stalking your questions now. e_e (jk) http://www.space.com/19878-halleys-comet.html
OpenStudy (inowalst):
"Halley's Comet is arguably the most famous comet. It is a "periodic" comet and returns to Earth's vicinity about every 75 years" So every 75-76 years.
OpenStudy (inowalst):
Thank you.
OpenStudy (kittiwitti1):
You're welcome (sorry that was late) :]
OpenStudy (leonardo0430):
thank gaben ;^)
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OpenStudy (theraggedydoctor):
dot.
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