News agencies
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Three black holes, defined as "monstrous in their dimensions", were discovered near the Earth. This was reported at the 195th meeting of the American Astronomical Society, which was in Atlanta, Georgia.
The three, supermassive black holes, were discovered in the constellations Virgo and Aries - between 50 million and 100 million light years from Earth. A light-year is the distance that light travels in a year - approximately 10 trillion km). Nevertheless, in astronomical terms these are bodies that are "just around the corner".
The mass of the discovered black holes is between 50 million and 100 million times more than the mass of the Sun - so the three belong to a "small club" of giant black holes. The scientists believe that the "club" has twenty of them. Most black holes are larger than the mass of the Sun, only a few times.
Until ten years ago, the existence of black holes was controversial. Today, most scientists acknowledge their existence and debate their part in shaping the galaxies and the universe.
The giant black holes, said Douglas Richstone from the University of Michigan, are the remnants of quasars - bright bodies, whose light intensity is equal to that provided by a trillion suns, on an area the same as that of Mars.
The quasars formed before most of the stars in the galaxies formed. That is: the black holes were created in the "quasar era", when the universe was young, only about a billion years old (the age of the universe is estimated at 14-12 billion years).
The discovery raises the question: what preceded what? - The massive black holes or the galaxies in which the "holes" are found.
The scientists claim that the creation of the galaxies developed simultaneously and "within a close relationship" between them, with the black holes "stabilizing" in the center of the galaxies.
They knew the black holes
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