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Hale-Bopp

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Hale-Bopp

Large and exceptionally active comet, which in March 1997 made its closest fly-by to Earth since 2000 BC, coming within 190 million km/118 million mi. It has a nucleus of approximately 40 km/25 mi and an extensive gas coma (when close to the Sun Hale-Bopp released 10 tonnes of gas every second). Unusually, Hale-Bopp has three tails: one consisting of dust particles, one of charged particles, and a third of sodium particles.

Hale-Bopp was discovered independently in July 1995 by two US amateur astronomers, Alan Hale and Thomas Bopp.



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? Mentioned in ? References in periodicals archive
 
Similar particles were detected coming off comet Hale-Bopp when it journeyed into the inner solar system in 1997 (SN: 7/29/00, p.
Distant dust: asteroid belt or boiling comet? by Cowen, R. / Science News
And when Comet Hale-Bopp traveled through the skies in 1997, backyard observers all over North America could watch the nightly show the same as NASA scientists.
Starry, Starry Nights: if someone told you there was a spectacular ... by Dickinson, Elaine / BOAT/U.S. Magazine
Alan Hale is founder and director of the nonprofit Southwest Institute for Space Research in Cloudcroft, New Mexico, and was codiscoverer of Comet Hale-Bopp in 1995.
Some thoughts about Tuesday. (THE POPULAR CONDITION) by Hale, Alan / The Humanist
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