Why did Halley hiccup?

Details Why did Halley hiccup? Why did Halley hiccup?

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991natur.353..793w&link_type=abstract

Nature (ISSN 0028-0836), vol. 353, p. 793, 794.

Physics

11

Comet Nuclei, Cometary Atmospheres, Halley'S Comet, Interstellar Chemistry, Luminosity, Carbon Monoxide, Chiron, Ice, Interplanetary Dust, Solar Flares

Scientific paper

The outburst of Halley comet that occurred in February 1991 when the comet was over 14 AU from the sun, between the orbits of Saturn and Uranus, is described. This region of the solar system was known to be so cold that a comet nucleus would be totally inert there. On February 12th, 1991 Halley brightened by a factor of about 300, and a dust coma was observed around the nucleus. Different explanations of the comet's strange behavior are suggested.

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