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How Do We Know the Russian Meteor and 2012 DA14 Aren't Related?
So how can we tell that the Russian meteor isn't related to asteroid 2012 DA14?
One way is to look at meteor showers - the Orionids all have similar orbits to their parent comet, Halley. Simi ... more
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Gaia Will Reveal Secrets of Ultra-Cool Dwarfs
Among the hundred billion stars which can be observed in the Milky Way, there is a group of stars, the so-named ultra-cool dwarfs, defined as stars with a temperature below 2500 K, which includes ul ... more
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A drop of ink on the luminous sky
This part of the constellation of Sagittarius (The Archer) is one of the richest star fields in the whole sky - the Large Sagittarius Star Cloud. The huge number of stars that light up this region d ... more
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Rare Explosion May Have Created Our Galaxy's Youngest Black Hole
The highly distorted supernova remnant shown in this image may contain the most recent black hole formed in the Milky Way galaxy. The image combines X-rays from NASA's Chandra X-ray Observatory in b ... more
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