Keith Elliott's Astrophotography

or: How I Learned to Stop Worrying and Love the Bok Globules

This blog was previously about my efforts to learn astrophotography. In the Spring of 2014, I expanded it to include information about my other interests, especially Natural History, and my volunteer work for the National Park System and California Phenology Program.

Thursday, November 29, 2012

Why is it dark at night?

Well, why IS it dark at night? Here's a nicely-done video that explains why, using a lot fewer words than I could.
http://www.youtube.com/watch?v=gxJ4M7tyLRE
Posted by Keith Elliott at 10:01 AM No comments:
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