The sun and moon appear the same size in Earth’s sky because the sun’s diameter is about 400 times greater – but the sun is also about 400 times farther away.
Space
Jan 28, 2012
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The Hinode satellite, which has been orbiting Earth since 2006, has captured some amazing eclipse images. This one is particularly striking.
Jan 27, 2012
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Venus is very bright. That’s partly because sunlight is easily reflected by acidic clouds that blanket the planet’s atmosphere.
Jan 26, 2012
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That glow over the unlit part of a crescent moon – called earthshine – is light reflected from Earth.
Jan 25, 2012
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There are going to be some spectacular pairings of Venus and the moon in early 2012. Here are fav pics from last month, taken by EarthSky Facebook friends.
The Opportunity rover touched down on Mars at 5:05 a.m. UTC on January 25, 2004 for a planned three-month mission to explore the Red Planet.
Jan 25, 2012
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Observers at high latitudes reported “incredible” displays of the northern lights during the night of January 24, 2012.
Jan 24, 2012
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Storms on the sun can release charged particles that can travel up to several million miles per hour and sometimes strikes Earth. Is this dangerous? Should we be worried?
Jan 23, 2012
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A powerful solar eruption has sent a massive stream of charged particles toward Earth – due January 24, 2012. Aurora alert at lower latitudes than normal!
Jan 22, 2012
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Scientists caught a comet’s fiery death plunge into the sun in July 2011 on camera, and made a movie of it. Check it out!
