Astronomers have specified the age of the universe
The age of our universe is 13.73 billion years old, the deviation from this date are possible, but they do not exceed 120 million years in the up or down direction. These figures are based on studies of the spacecraft Wilkinson Microwave Anisotropy Probe (WMAP), which analyzed the radiation coming to our planet from the depths of outer space. As they note, in 2006, with the two methods were carried out similar studies, then, astronomers estimated age of the universe about the same time, however, deviations were large - give or take 500 million years.
Now the real deviation of age reduced to a few tens of millions of years. "Over time, we get more and more accurate data, based on the increasingly tuned calculations. Actually, this clarification is important for science, as it is the initial point of reference repel birth of the universe many other studies, "- says Charles Bennett, a professor of physics and astronomy at Johns Hopkins University, where the study and carried out.
According to the scientists, after about 380,000 years after the Big Bang, the universe cooled enough for protons and electrons are able to as- Organize, and then form the first atoms of hydrogen. This chemical reaction is triggered flashes of light that are still imprinted in the microwave background current, the already cooled and expanded at 13.73 billion light-years across the universe. analyzing subtle background that may fluctuate somewhat over time, you can tell a lot about the first parts per trillion of life Universe immediately after the Big Bang.
Another source of information about the past of our universe are tiny and almost imperceptible particles - neutrinos, which are able to cross the entire universe from one end to another, carrying the information about the phenomenon that gave them birth. At present, it is assumed that most of the neutrinos that exist in space, having at the moment of the Big Bang. However, there are neutrinos, resulting from the activity of other phenomena associated with space objects - black holes, stars and quasars.
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