Black holes are well hidden

by Nina Gotzmannova

It may seem there aren't any surprises in space anymore. Since scientists can observe the sky with huge and high-efficient telescopes, astronauts can fly to nearby planets and bring back samples of rocks and space dust, and modern physical research is better than anytime before. But every new discovery is greeted with applause and surprise. One of them is discovery of hundreds of new black holes.National Optical Astronomy Observatory in Tuscon, Arizona will published two studies about black holes in the incoming issue of Astrophysical Journal, released on November 10. They have discovered the existence of hundreds black holes existing in the early universe. The study says that most galaxies have created many black holes at their cores when they were still young. But, young as young. For example a galaxy located 10 billion light-years away had its own black holes when the universe was only 3 billion years old. Now it's known that there are more than one hundred billion galaxies in the Universe and if each galaxy created five black holes, there are five hundred billions of them. Impressive, isn't it? A black hole is an object in the universe that has strong pull of gravity and even light can't escape it. That's the reason it's called black hole, although it is not black and has no hole inside. The first idea of black hole was proposed in 18th century and the proof of existence was brought into public after 1916, when Einstein published his theory of relativity.

related story: http://news.yahoo.com/s/space/20071025/sc_space/hundredsofmissingblackholesfound;_ylt=AkUl..oDanRJ9qmMnpGd6Sas0NUE

by Nina Gotzmannova for PocketNews (http://pocketnews.tv)

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Posted by: Jana Kalicka