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With So Many Stars, Why Does It Get Dark? - Hank Campbell, Science 2.0

In a comment on You, Andromeda, And The Largest Structure In The Universe, Mike Crow posted a picture of Andromeda, made from 40 hours of his exposure, 5 minutes at time, in his driveway.

Why Is the Night Sky Turning Red? - Amy Teitel, Discover Blogs

The idea of a red sky at night used to invoke beautiful images of vibrant sunsets, the product of warm sunlight bathing the sky near the horizon. The adage of “red sky at night,...

Night Lights May Trigger Depression - Janet Raloff, ScienceNews

Psychiatrists sometimes prescribe light therapy to treat a form of depression in people who get too little morning sun. But too much light at other times may actually trigger such mood...

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