New Earth-at-Night Photos Show People, Light Creep

NASA scientists just released new global maps of Earth at night, providing the clearest-yet views of the patterns of human settlements across our planet and the light we bring to our night skies. Until 2012, nighttime photos of the planet were only available to a small group of scientists through military satellites and astronaut photography. But…
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The Face Of Earth-Approacher 2014 JO25 / Sun Blows Off Some ‘Steam’

Tonight, we finally get a chance to see Earth-approaching asteroid 2014 JO25 canter across the sky a day hours after its closest approach to Earth. You’ll need a 3 or 4-inch telescope to find and track it, and I hope you do. Unfortunately, my skies will be cloudy, so if you see this giant hurtling rock, please…
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See A Potentially Hazardous Asteroid Zip By Earth Wednesday

Astronomers are constantly on the lookout for slippery asteroids and comets passing through Earth’s neighborhood. Thanks to their efforts, we know of at least 16,000 NEOs or Near-Earth Objects, the majority of which are asteroids. Of that number about 1,800 are potentially hazardous. One of them, 2014 JO25, will be speeding by our planet Wednesday.…
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Mostly Saturn With A Chance Of Auroras

Do we have any bread bakers out there? Runners? Tomorrow morning, assuming clear weather, they (and anyone else inclined) will see the waning gibbous moon and Saturn stand together in the southern sky an hour or two before sunrise. Both are in the Teapot constellation, Sagittarius the Archer. Sagittarius and neighboring Scorpius are summertime groups…
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Distant, Dim ‘DeeDee’ Beckons From Beyond

Meet DeeDee. At about three times Pluto’s current distance from the sun, DeeDee is the second most distant known trans-Neptunian object (TNO) with a known orbit. Only the dwarf planet Eris lies further. Both circle the sun in the scattered disk, a sparse ring of bodies that lies even farther than the Kuiper Belt, an…
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