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Spotting the Comets of 2018 and Tracking Their Spectacular Encounters Using Mobile Apps
September 08, 2018 | ArticleThis month, a periodically returning comet designated 21P/Giacobini-Zinner is bright enough to be seen in binoculars and small telescopes. Here's how to track it.
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Two Small Asteroids Are Buzzing Earth This Weekend. See One Live Tonight!
September 08, 2018 | ArticleA near-Earth asteroid will safely fly by Earth on Sunday (Sept. 9), and you can watch its approach in a live webcast tonight (Sept. 8).
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A Bright Green Comet Will Grace September's Skies
September 07, 2018 | ArticleSeptember brings a chance to see a comet. It will be bright enough that you can readily glimpse it using binoculars, though it will be much easier to see using just a small telescope.
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Behold, the Milky Way! Our Galaxy Glitters in This Spectacular Photo
September 07, 2018 | ArticleThe starry arc of the Milky Way galaxy sprawls across the evening sky on a spring night in this photo captured near the village of Campinho in Portugal's Dark Sky Alqueva Reserve.
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See Two Bright-Green Comets in 2018's Night Sky: How, Where and When to Look
September 06, 2018 | ArticleA bright-green comet is making an appearance in the night sky this month. Comet 21P/Giacobini-Zinner is now visible with binoculars and telescopes. Meanwhile, an even brighter comet is heading our way and will become visible to the naked eye in December.
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September Full Moon 2018: When to See the 'Harvest Moon'
September 06, 2018 | ArticleThe full moon of September, called the Harvest Moon, will grace the skies on Sept. 24, just two days after the autumn equinox.
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Amazing Photos: The Comets 21P/Giacobini-Zinner and 46P/Wirtanen of 2018
September 06, 2018 | Image AlbumSee photos of Comet 21P/Giacobini-Zinner and the naked-eye comet 46P/Wirtanen, which will swing around the sun in September and December.
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Grand Tour: Astronomer Spots 8 Planets in a Single Night (Photos)
September 04, 2018 | ArticleYou may know your way around the night sky, but you've likely never pulled off anything like this. Italian astronomer Gianluca Masi managed to photograph all eight of the solar system's officially recognized planets in a single night.
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Labor Day Comet Stars in Slooh Webcast Tonight!
September 03, 2018 | ArticleCelebrate Labor Day tonight (Sept. 3) by watching a bright-green comet approach the sun in a live webcast by the Slooh online observatory.
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This Impact Crater on the Moon Is Nearly the Size of Hawaii's Big Island (Photo)
September 02, 2018 | ArticleA close-up view of a moonscape near the lunar south pole shows many different impact features, but one in particular might catch your attention.
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