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News for Norther Colorado and the world

Sunday, September 21, 2014

Posts Tagged ‘solar wind’

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

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