On June 20, 1943, Pingualuit Crater (formerly known as Chubb Crater and as the New Quebec Crater) was first photographed by a U.S. Army Air Force crew during a meterological flight over northern Quebec. Formed approximately 1.4 million years ago by a meteorite impact, the 2.1-mile-wide (3.4 kilometers) crater has an unusually circular shape resultingContinue reading "June 20, 1955: Pingualuit Crater is discovered"

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Looking for a sky event this week? Check out our full Sky This Week column.  June 19: Dione crosses due north of Saturn Highest in the south around 10:30 P.M. local daylight time is the constellation Libra, whose brightest star is Beta (β) Librae, also called Zubeneschamali. Nearly 12° below (south) of this star at that timeContinue reading "The Sky Today on Saturday, June 20: Libra’s Ghost Cluster"

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