Moon’s Shadow Ruffles Ionosphere During Last Year’s Solar Eclipse

Row, row row your boat. The waves look just like a wake and follow the moon’s shadow from the central U.S. eastward. The red line is the time of local noon. MIT The 2017 total solar eclipse drew so many of us together in a single, grand cosmic moment. While we took in the sight,…
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Neptune By Way Of The Moon

Tonight, the crescent moon will look about a wide as an unclipped fingernail. You’ll spot it right away in the southwestern sky at dusk, high and bright. Just 2° (four moon diameters) to the moon’s upper right lurks another member of the solar system, the planet Neptune. The two are in conjunction tonight in the…
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Tonight’s Scrap-of-a-Moon Challenge

Tonight’s moon will barely be there, but that’s exactly what will make it so beautiful. New moon occurred yesterday at 8:17 p.m. (Central Time), making this evening’s moon just 20 hours old from the East Coast, 21 hours from the Midwest, 22 from the mountain states and 23 from the West Coast. Very young and…
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Saturn Mercury Duet At Dawn

I thought we were done with the planets after the crescent moon stopped by on Thursday next to Jupiter and Saturn at dawn. Not on your life. Two more vie for our attention lower down in the dawn sky: bright Mercury and returning Saturn. They’ll really get close too — less than 1° (⅘° to…
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Does The Moon Orbit The Earth Or The Sun?

For your viewing pleasure, here’s another look at our planet and satellite from a distant vantage point. The composite image was made by NASA’s OSIRIS-REx’s spacecraft on Oct. 2, 2017 and released this week. The spacecraft was about 3 million miles (5 million km) from Earth at the time and en route to its target, the…
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