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Kamikaze comet loses its head

Like coins, most comet have both heads and tails. Occasionally, during a close passage of the Sun, a comet's head will be greatly diminished yet still retain a classic cometary outline. Rarely are we left with nothing but ...

dateMar 03, 2015 in Space Exploration
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Image: Giant filament seen on the sun

A dark, snaking line across the lower half of the sun in this Feb. 10, 2015 image from NASA's Solar Dynamics Observatory (SDO) shows a filament of solar material hovering above the sun's surface. SDO shows colder material ...

dateFeb 12, 2015 in Space Exploration
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Do stars move?

We know that Earth is not the center of the universe—let alone the Solar System—but looking at the sky, it's easy to get confused. Stars appear to be rising and setting, as well as the planets, Moon and the Sun. And with ...

dateFeb 10, 2015 in Astronomy
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Stanford pair helping predict solar storms

Life as a forecaster is not easy. Just ask National Weather Service forecasters who misjudged how a recent winter storm would impact the Big Apple. Now imagine trying to predict weather activity on a burning sphere 1.3 million ...

dateFeb 19, 2015 in Space Exploration
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Tracking a gigantic sunspot across the Sun

An active region on the sun – an area of intense and complex magnetic fields – rotated into view on Oct. 18, 2014. Labeled AR 12192, it soon grew into the largest such region in 24 years, and fired off 10 sizable solar ...

dateOct 31, 2014 in Space Exploration
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