In my January column, I challenged readers to look for some of the finest naked-eye features on the Moon during lunar perigee — when the Moon is closest to Earth in its elliptical orbit. But have you ever wondered if we can tell whether the Moon is at perigee or apogee (when it's farthest away) using only our unaided eyes? The problem is that during the night the Moon sails across the vast vault o...
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July 2013: In the constellation Ophiuchus lurks a star-forming region home to a "hole in the heavens."
Published: May 28, 2013 //
June 2013: The rainbow that we think of as familiar can have some surprising variations.
Published: April 22, 2013 //
May 2013: In the totality of an eclipse, viewers make both scientific and personal observations.
Published: March 25, 2013 //
April 2013: This heavenly hound’s stars may not be very bright, but the constellation has a shining history.
Published: February 25, 2013 //
March 2013: Take this month's observing opportunity to test out your eyes’ color receptors.
Published: January 28, 2013 //
February 2013: Search out the various beautiful phenomena the Sun and your shadow can create.
Published: December 21, 2012 //
December 2012: Our sister planet's trip across the Sun produced some spectacular effects.
Published: October 29, 2012 //
October 2012: Learn how to photograph one of the sky’s more colorful phenomena: atmospheric coronae.
Published: August 28, 2012 //
September 2012: An unexpected, almost electric display makes this star city an unusual target.
Published: July 23, 2012 //
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