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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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Category Archives: Martial Arts
Wearing the black
After much effort, a lot of fun, and too much stressing over the event itself… The black belt has been awarded to this humble scribe. Much more to learn but, the first challenge on that path has been completed. No … Continue reading
Posted in Kyuki-do
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Range Day
Not! This morning was supposed to be the day that I went to the range for the first time since … Christmas. It has been too long but between work, vacation, getting caught up, travel and so on range time … Continue reading
Posted in Kyuki-do, Shooting
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Movie Training
Have you ever wondered what goes into making a movie as realistic as possible and gone… “eh, it’s a movie. You can run all the takes you need”. Well, it seems that some folks think it takes a bit more … Continue reading
Posted in Fitness, Guns, Martial Arts, Shooting
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UFC at MACE
Offered with one comment…. watch them all. Damn I miss this.
Posted in Marines, Martial Arts
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Promotion Exams
I love the martial arts. I have a great group that I get to work with, and enjoy myself a lot. But, two hours for a promotional exam is a killer. I have got to get my cardio back where … Continue reading
Posted in Kyuki-do, Martial Arts
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Cane-Fu
Very cool new program. This is the new world of self-defense for seniors, at least as taught by Shuey, founder of Cane Masters, a Lake Tahoe, Nev.-based company that manufactures custom canes. Shuey, a tae kwon do and hapkido expert, … Continue reading
Posted in Martial Arts
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Midwest Kyuki-do Tournament
So yesterday was the Midwest American Kyuki-do Federation Tournament. It made for a very long day, and was the first one of these tournaments that I had been to. A little background: Kyuki-do is a a martial art that is … Continue reading
Posted in Kyuki-do
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