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News for Norther Colorado and the world

Saturday, December 20, 2014

Posts Tagged ‘coma’

Astronomy Picture of the Day

Astronomy Picture of the Day

Why does Comet Garradd have two tails? Visible on the left, Comet Garradd's dust tail is composed of ice and dust bits that trail the comet in its orbit around the Sun. Visible on the right, Comet Garradd's ion tail, is composed of ionized gas blown directly out from the Sun by the solar wind. Most comets show two tails, although it is unusual for them to appear to point in nearly opposite directions. Comet Garradd is currently showing opposing tails because of the Earth's opportunistic ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

Comet Garradd (C/2009 P1) now shines in planet Earth's evening skiesTails of Comet Garradd  Image Credit & Copyright: Gregg Ruppel Explanation: A good target for binoculars and small telescopes, Comet Garradd (C/2009 P1) now shines in planet Earth's evening skies, a steady performer but just below naked-eye visibility.Telescopic images like this composite from October 15 can find the comet with a lovely green coma, sporting multiple tails, and lingering against a background of ... Full Story

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