You know the old Hughes Mearns poem, "As I was going up the stair, I met a man who wasn't there ..."Astronomers study objects we assume are really there. But sometimes they're not. A few months ago we mentioned rainbows, which stirred some controversy. Are they there? Sort of. A rainbow is nothing but a group of light rays converging on your eyes. It has no solidity. It cannot cast a shadow. But i...
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April 2013: Some pranks were deliberate, some accidental.
Published: February 25, 2013 //
March 2013: We may all be different, but we each get something from the wonders of the universe.
Published: January 28, 2013 //
February 2013: This Groundhog Day, remember that all shadows involve science — not rodents.
Published: December 21, 2012 //
January 2013: Accomplishing a complex task by mere chance creates seemingly endless possibilities.
Published: November 26, 2012 //
November 2012: Recent studies indicate that we can't see even a small piece of the cosmos
Published: September 24, 2012 //
October 2012: How do you capture exciting celestial images without creating something that's not real?
Published: August 28, 2012 //
September 2012: Sometimes the truth is just what you have the space and time to explain.
Published: July 23, 2012 //
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