The two brightest nighttime stars visible in the Pottsville sky are Sirius and Arcturus. April is the only month of the year when we can enjoy both of them at the same time in the early evening: ...
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 ...
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