Get An Eyeful Of Copernicus, The Moon’s Most Magnificent Pothole

Tonight the sun rises over Copernicus, one of the most magnificent craters on the moon. Unlike the gaping potholes waiting to jar your car this season, a smooth ride is guaranteed. At 58 miles (93 km) across and set off by itself like an old oak tree in a big field, it’s easy to see…
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Beauty In Chaos — Merging Galaxies And Heady Days For The Future Solar System

Today let’s see when what happens when two galaxies collide. The pair featured here is located about 230 million light years away in the constellation of Hercules. When they were first discovered by William Herschel in 1784 they looked like a single object in his telescope and received a single catalog number, NGC 6052. But the…
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Put Canopus, Second Brightest Star, On Your Vacation Itinerary

Going on a vacation to the southern U.S., Costa Rica or Mexico soon? If so you have a chance to see a sight denied to everyone living north of a line from Las Vegas to Oklahoma City to Nashville — Canopus! I’ve written many words about Sirius, the brightest star in the sky, but we…
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Moon Visits Mars Tonight / Curiosity Rover 360°

The crescent moon made a beautiful return appearance to the evening sky late last week. Did you see that wispy thing? Tonight it’s filled out and high in the southwest at dusk. You’ll also notice how earthshine — sunlight reflected from Earth to the moon and back — faintly illuminates the remainder of the moon.…
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Hold Your Horses, Orion — The DST Police Are Here

I was surprised several nights ago when I saw that Orion already tipping over in the west by 10:30 p.m. Is winter really on its way out? With a snowstorm in today’s forecast, I doubt it, but daylight saving time (DST) begins tomorrow, so spring must be close, right? As we set your clocks forward…
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