Raymond C. Gentile

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The paradox of the demon star

There is a demon's head winking at us every few nights. It's brightest during the winter months, so you might be able to see it on clear nights in …


The Astronomical Hijinks of the Shortest Day of the Year

The solstice isn't for more than a week, but the earliest sunset of the year is already upon us. How's that possible?<p>If you live around latitude 42N—a well-populated latitude in North America and Europe, taking in Boston, Rome, and Vladivostok—today is the day you'll experience the earliest sunset …