Scientists have found an explanation for the radio waves coming to Earth since decades and it proves that we haven’t been contacted by aliens.
For many years scientists all over the world tried to resolve the mystery of the radio waves intercepted from billions light-years away. One of the biggest problems was that the blasts, being as short as thousands of a second and appearing randomly, could only be detected in data sets years after they have been recorded by our instruments.
Until now, different possible explanations have been studied by scientists. Some of them thought the fast radio bursts could be coming from flaring dead start, colliding dense objects or evaporating black holes. Others were saying that they could be an artefact produced on Earth and not signals from other galaxies.
Many space enthusiasts but also some scientists have even said they could be signals from alien civilizations looking for life outside their galaxy by sending radio messages out in the Universe and suggested that we should respond.
Only now a team of scientists has analysed the radio waves in a recent detected burst and came with a plausible theory. The researchers say that the burst originates in an area with dense and highly magnetized plasma and has travelled through probably two gas clouds before being intercepted by the Green Bank Telescope situated in West Virginia.
Kiyoshi Masui from the University of British Columbia says that the burst probably came from a dense region of a galaxy, an area where stars are either forming or dying and exploding.
A new data mining program has helped Masui and his colleagues search through 650 recorded hours of observations. However, the program couldn’t identify the real burst among other about 6.500 imposters so a researcher from Carnegie Mellon University had the task of sorting through them and find the real one.
According to the new findings, the burst has been released on May 23, 2011 in the Aquarius constellation and lasted about three milliseconds. However, some crucial clues have been extracted from its data.
The fact that the radio waves appeared to be twisted showed that the radio waves had passed through magnetic fields while travelling through the Universe. Measuring how twisted they were, scientists could determine how strong the magnetic field they passed through was.
More than that, observing how scattered the waves were, the team of researchers has been able to determine that in their way to us they had passed through about 2 clouds of ionized gas, which have scattered the waves and changed the burst’s shape.
Finally, scientists concluded that the burst has traveled somewhere between no less than 100 million and no more than 6 billion light-years to reach us.
Image source: pixabay.com
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