Comet Halley


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Related to Comet Halley: Comet Hale-Bopp, Comet Kohoutek

Comet Halley

[¦käm·ət ′ha·lē]
(astronomy)
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Orionids: Conditions during 2014 favour the observation of both comet Halley streams.
Although the camera could take plates up to 165x216mm ('Whole Plates') I had altered it to take more affordable 102x127mm Kodak IIa-O blue sensitive plates, some of which had been in the freezer since comet Halley in 1985-'86.
Comet Halley November 9 through April 27, Mondays at 7:30, Tuesdays through Fridays at 3, 7:30 and 9, weekends at 11, 1, 3, 7:30, and 9.
It is expected to pass less than 10 million miles from Earth, which could make it the brightest comet since Comet Halley in 1986, outshining all but the brightest half-dozen stars.
Eta Aquarid, one of the two annual meteor showers originating from Comet Halley, got its name from the "most radiant point" in the constellation Aquarius which is a bright star called Eta Aquarii.
Incredible as it sounds, each year hundreds of thousands of kids in the fifth through eighth grade at schools across the country, have taken two-hour simulated space flights to the Moon and Mars and a rendezvous with Comet Halley at Challenger Learning Centers.
They suggested building a sailcraft that would rendezvous with Comet Halley during its 1986 return to the inner solar system.
Some observers, concerned that urban light pollution may prevent a person's one chance to see the comet, have launched a light-dimming program called "Dark Skies for Comet Halley.
From the intensity of the cyanogen emission, Fitzsimmons and Cartwright calculate that the comet vents about 3 kilograms of the gas every second-five times more than Comet Halley released in 1985, when it was much closer to the sun's warming rays.
The brightness of Hale-Bopp in the latest observations with the Hubble Space Telescope suggests that the comet's icy nucleus has a diameter as large as 40 kilometers-four times bigger than the nucleus of Comet Halley.
In fact, they are similar in size to Comet Halley and may directly replenish the supply of short-period comets.
They deduced that the comet expelled about 2,000 kilograms of carbon monoxide each second, roughly the rate that Comet Halley attained in 1986 during its closest approach to the sun.