Now that's a comet!

Dean Ketelsen took this image (five frames stacked together) through a friend's telescope. You can read more about how he did it on his blog.

March 18, 2013 3:26 pm  • 

About this blog

From the cosmos to the invisible world of nanotechnology, this is the place for anyone with a "scientific bent" in Southern Arizona.

Senior reporter Tom Beal provides color commentary from the science beat and assistant business editor Dave Wichner contributes an inside look at the business aspects of technology.

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