Since 1986 I have had an affiliation with the Hayden Planetarium in New York. My "official" title there is "Associate and Guest Lecturer." Indeed, through all of these years I given scores of ...
Sunday: Many of the bright stars in the sky are not single stars, but are part of multi-star systems. Sirius, the brightest star in our sky, is no exception. It is almost due south at 8 p.m. Sirius ...
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