Halley's comet

(redirected from Comet Halley)
Also found in: Encyclopedia.
Related to Comet Halley: Comet Hale-Bopp, Comet Kohoutek

Hal·ley's comet

 (hăl′ēz, hā′lēz)
n.
A comet with a period of approximately 76 years. The first comet for which a return to the inner solar system was accurately predicted, it last appeared in 1986.

[After Edmund Halley.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Halley's Comet

(ˈhælɪz)
n
(Astronomy) a comet revolving around the sun in a period of about 76 years, last seen in 1985–86
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

Hal′ley's com′et

(ˈhæl iz or, often, ˈheɪ liz)
n.
a comet with a period averaging 76 years: most recently visible in 1986.
[after Edmund Halley, who first predicted its return]
pron: The common pronunciation for both the comet and the astronomer Edmund Halley, and the one usu. recommended by astronomers, is (ˈhæl i) However, several spellings of the name, including Hailey and Hawley, were in use during the astronomer's own time, when spellings were not yet fixed, and corresponding pronunciations have survived. The pronunciation (ˈheɪ li) in particular remains associated with Halley's comet; it is less likely to be heard as a pronunciation of Edmund Halley.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

Hal·ley's comet

(hăl′ēz, hā′lēz)
A comet that makes one complete orbit around the sun in approximately 76 years. It is visible to the unaided eye and last appeared in 1986.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Halley's comet

A comet that orbits the Sun about every 76 years. It was first recorded in 240 BC, was last seen in 1986, and is next due in 2061.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
References in periodicals archive ?
It is produced by dust particles left behind by comet Halley, which has been known about and observed since ancient times.
The earth is passing through the stream of debris left behind by Comet Halley, the parent comet of the Orionid shower, the agency said.
But my two other most fascinating comets of the past 50 years have been Comet Halley in March-May 1986 and Comet IRAS-Araki-Alcock in May 1983, the latter of which I'll discuss here in next month's column.
Producing up to 20 meteors per hour radiating from the constellation Orion, the Orionids is produced by dust grains left behind by Halley's comet Halley, observed since ancient times.
"What makes this shower somewhat special is that the meteors stem from the most famous comet in all of history, Comet Halley. As Halley goes around the sun in its 76--year orbit, pieces of it, little chunks of ice, slough off the comet and we intersect that every year around this time, in early May.
Around that time, he said, the Comet Halley was visible from Earth and was probably connected to Jesus.
About how many more years does Comet Halley spend in one orbit compared with Comet Tempel-Tuttle?
The only other probe that's photographed a comet's nucleus is the European Space Agency's probe Giotto, which encountered Comet Halley in 1986.
'The images are even better than the impressive images of comet Halley taken by Europe's Giotto spacecraft in 1986.'