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Halley's comet

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.09 sec.
Hal·ley's comet  (hlz, hlz)
n.
A comet with a period of approximately 76 years. The first comet for which a return was successfully predicted, it last appeared in 1986.
[After Edmund Halley.]
Halley's comet  (hlz, hlz)
A short-period comet that orbits the Sun once every 76 years. It is visible to the unaided eye and last appeared in 1986, when close observation by spacecraft showed that its nucleus measures about 16 km (10 mi) by 8 km (5 mi) and is composed of water ice, stony minerals, and organic compounds. Its next appearance will be in the year 2061.


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Of course we think a good deal of Jupiter, because our world is only a potato to it, for size; but then there are worlds in other systems that Jupiter isn't even a mustard-seed to - like the planet Goobra, for instance, which you couldn't squeeze inside the orbit of Halley's comet without straining the rivets.
Captain Stormfield's Visit to Heaven by Twain, Mark View in context
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