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A blue-white star in the constellation Leo.

Radio Programs

Moon and Regulus A star that’s older than it looks April 6, 2017

Moon and Regulus Reading a star from its color March 10, 2017

Moon and Regulus Learning about a familiar star January 14, 2017

Moon and Regulus Four stars for the price of one December 17, 2016

Moon and Regulus Lining up a pair of stellar lamps November 20, 2016

Moon and Regulus Spinning off a colorful cloud June 9, 2016

Moon and Regulus Give and take among the stars — after this. April 16, 2016

Moon and Regulus Marking the rhythms of the sky February 21, 2016

Moon and Regulus A stellar “king” and his entourage January 25, 2016

Moon and Regulus The intertwined lives of two stars March 29, 2015

Moon and Regulus A royal heart for a royal beast March 2, 2015

Moon and Companions Feeble companions for a bright star November 13, 2014

Moon and Regulus Keeping an old star looking young September 19, 2014

Moon and Regulus A stellar whirling dervish June 2, 2014

Moon and Company An effective type of sun block October 26, 2013

Venus and Regulus A fairy tale in the evening sky July 19, 2013

Moon and Regulus The lion’s quadruple heart July 10, 2013

Moon and Regulus Putting the squeeze on a star March 22, 2013

Moon and Regulus A different kind of star system February 23, 2013

Venus and Regulus Venus chugs past the heart of the lion September 30, 2012

Alexandria A city — and a star — fit for a king July 19, 2012

Moon, Mars, and Regulus Uncovering the secrets of a star April 29, 2012

Leo Rising Adding some color to the stars February 26, 2012