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Wysłany: Pią 2:31, 27 Maj 2011 Temat postu: Hole in the Universe Astronomers Find a Giant Cosm |
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Read on
Most Distant Galaxies
Biggest Supernova Discovered
Extreme Astronomy Record Holders
But the hole is not a chapter of the cosmic microwave background (CMB) radiation, which is a leftover of the Big Bang. The hole lies between 6 to 10 billion light-years away. The cold spot is a result of the CMB radition passing through this vacant area on its course to Earth. The region is colder because of dark energy.
Dark energy can be seen as the inverse of gravity. While gravity pulls matter together,[link widoczny dla zalogowanych], dark stamina is what is causing the universe to amplify,[link widoczny dla zalogowanych], and at an ever-increasing rate. When the radiation from the Big Bang passed via this void in the universe,[link widoczny dla zalogowanych],[link widoczny dla zalogowanych], it had less energy than the radiation that passed through normal districts of space. In a simplistic explanation, the radiation is given a shove when it nears the pull of matter such as galaxies, and dark energy allows the radiation to propel away from these areas followsout losing the boost when gravity would pull it behind. The radiation passing through the empty space does not obtain the boost and the energy, therefore it is slightly colder.
Astronomers at the University of Minnesota have situated a colossal chasm in the macrocosm. This vacant space, extending nearly a billion light-years across, is devoid of whichever matter such for galaxies,[link widoczny dla zalogowanych], stars, and gas, and nor does it embody the strange and secret black matter, which tin be detected merely no looked.
Empty places in the universe are not uncommon. It is already known namely matter tends to clump and form stars and galaxies, clusters and superclusters, deserving to the plucking compel of gravity. So astronomers have already seen areas in the universe where there are teams of matter and areas where matter is extra scanty. But this fashionable breakthrough is many larger than any previously known "hole".
Prevalence of Holes
Source of Discovery
Not only has no one ever found a void this big, but we never even anticipated to detect an this size, explains Lawrence Rudnick of the University of Minnesota. Rudnick was one of the researchers to find the hole. The news was reported in the Astrophysical Journal.
Where the Hole Lies
Rudnick and his crew studied file from a examine of the whole sky imaged at the Very Large Array radio telescope. A map of this area of the sky was already known to be an anomaly. It had been phoned a "cold spot" later a satellite that drafts the cosmic microwave background radiation discovered it was less lukewarm than its surroundings. (Overall the cosmic microwave background radiation is exceptionally cold, and the feud seen was only in millionths of a degree.)
The place of sky in which the hole exists lies in the direction of the constellation Eridanus. Eridanus is the constellation of the River, and can be found winding underneath Taurus and Cetus.
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