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Eagle Aurora over Norway
What's that in the sky? An aurora.
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The Big Corona
Most photographs don't adequately portray the magnificence of the Sun's corona.
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Astronomy Picture of the Day: Sun Dance
Sometimes, the surface of our Sun seems to dance.
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Astronomy Picture of the Day: A Solar Filament Erupts
What's happened to our Sun? Nothing very unusual -- it just threw a filament. Toward the middle of 2012, a long standing solar filament suddenly erupted into space producing an energetic Coronal Mass Ejection (CME).
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Astronomy Picture of the Day: A Powerful Solar Flare
It was one of the most powerful solar flares in recorded history. Occurring in 2003 and seen across the electromagnetic spectrum, the Sun briefly became over 100 times brighter in X-rays than normal.
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Astronomy Picture of the Day: Coronal Rain on the Sun
Does it rain on the Sun? Yes, although what falls is not water but extremely hot plasma.
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Astronomy Picture of the Day: Dragon Aurora over Norway
What's that in the sky? An aurora.
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Astronomy Picture of the Day: The Sun Unleashed: Monster Filament in Ultraviolet
One of the most spectacular solar sights is an explosive flare
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