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Articles related to comets

What Are Comets? - Space and Astronomy - About.com
Historically comets were referred to as "dirty snowballs" since they were thought to simply be large chunks of ice mixed with a small amount of ice and dust.
Comets Information - Space and Astronomy - About.com
Throughout history, people have been both awed and alarmed by comets, stars with "long hair" that appeared in the sky unannounced and unpredictably.
Where Do Comets Come From? - Space and Astronomy - About.com
Comets are amazing objects, and can be quite beautiful when viewed through a telescope or, if lucky, the naked eye. But where do this fascinating objects come ...
Everything you need to know: Comet PANSTARRS in early April ...
Apr 2, 2013 ... If you haven't caught Comet PANSTARRS yet, try in early April 2013! PANSTARRS photos and viewing guide here.
Halley's Comet - Some History and Facts - Space and Astronomy
During the 20th century, Halley's Comet appeared in 1910 and 1986. During that most recent visit, five spacecraft from the USSR, Japan, and the European ...
Comets - Information on Comets - Space and Astronomy - About.com
Comets are dirty-ice leftovers from the formation of our solar system around 4.6 billion years ago. They are among the least-changed objects in our solar system  ...
The Small-Comets Hypothesis - Geology - About.com
Little icy comets or processing errors? The story of a controversial theory.
The Oort Cloud - Outer Reaches of Our Solar System
Most of the objects are what we refer to as comets; large globs of ice and dust. They orbit our Sun at immense distances, some more than 50,000 astronomical ...
Comet Tempel-Tuttle - Space and Astronomy - About.com
Although the comet 55P/Tempel-Tuttle was observed by Gottfried Kirch in 1699, it was not recognized as a periodic comet at the time. 55P/Tempel-Tuttle was ...
Comets - Pictures and Astronomy Facts - Space and Astronomy
Mercury - Pictures and Astronomy Facts · 10 Amazing, Interesting and Strange Astronomy Facts · Longnose Hawkfish Profile - Facts, information pictures and ...
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