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- Portrait of a Doomed Asteroid
A new study provides a possible explanation of mysterious X-ray flares detected by the Chandra K-ray Observatory for several years in the region of Sagittarius A*, or Sgr A*. The study suggests a cloud around Sgr A*, a supermassive black hole at the center of our Milky Way Galaxy, which contains hundreds of trillions of asteroids and comets that have been stripped from their parent stars. The flares occur when asteroids of six miles or larger in radius are consumed by the black hole. An asteroid that undergoes a close encounter with another object, such as a star or planet, can be thrown into an orbit headed towards Sgr A*. If the asteroid passes within about 100 million miles of the black hole, roughly the distance between the Earth and the sun, it is torn into pieces by the tidal forces from the black hole. These fragments would then be vaporized by friction as they pass through the hot, thin gas flowing onto Sgr A*, similar to a meteor heating up and glowing as it falls through Earth's atmosphere. A flare is produced and eventually the remains of the asteroid are swallowed by the black hole. Image Credit: Illustrations: NASA/CXC/M.Weiss
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Daily Archives: February 18, 2009
sitting on hertz bus in memphi…
sitting on hertz bus in memphis and the lot is 90% empty – where is this recession I keep hearing about?
POTUS Rockstar
So, POTUS is continuing in his rockstar approach to the presidency. Today we find out, that he will wear an earpiece to be fed answers to questions asked during press conferences. There are two things that I am waiting for: … Continue reading
Posted in Presidential Politics
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Alternate Identity
And the verdict is…. Of course I have a tendency to run an alternate version as well… Go to The Hero Factory for your alternate identity today.
Posted in Humor
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