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Comet Halley

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Halley's Comet

 or Comet Halley

First comet whose return was predicted, proving that at least some comets are members of the solar system. Edmond Halley showed in 1705 that comets seen in 1531, 1607, and 1682 were really one comet, and he predicted its return in 1758. Later calculations identified it with the large, bright comet seen during the Norman Conquest (and depicted in the Bayeux Tapestry) and with other comet sightings at intervals of about 76 years, the first in 240 BC. The only easily seen comet that returns in a single lifetime, it approached Earth twice in the 20th century (1910, 1985–86). Its nucleus is roughly 9 mi (15 km) across.


Comet Halley [¦käm·ət ′ha·lē]
(astronomy)


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About how many more years does Comet Halley spend in one orbit compared with Comet Tempel-Tuttle?
That's at least three times bigger than the famous Comet Halley, and twice the size of the comet or asteroid suspected of killing the dinosaurs.
Tap into Community Support The reappearance of Comet Halley a few years ago gave us the impetus for a Once-in-a-Lifetime Party.
 
 
 
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