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Astronomy Picture of the Day: Active Prominences on a Quiet Sun
Why is the Sun so quiet? As the Sun enters into a period of time known as a Solar Minimum, it is, as expected, showing fewer sunspots and active regions than usual.
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Astronomy Picture of the Day: Noctilucent Clouds over Paris Fireworks
It's northern noctilucent cloud season -- perhaps a time to celebrate!
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Astronomy Picture of the Day: Facing NGC 6946
From our vantage point in the Milky Way Galaxy, we see NGC 6946 face-on. The big, beautiful spiral galaxy is located just 20 million light-years away, behind a veil of foreground dust and stars in the high and far-off constellation of Cepheus
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fireworks ngc 6946 & ngc 6939
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