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Nasa astronomers says signal coming from outside our galaxy is ‘unexpected and as yet unexplained’

  • NASA scientists oblige found a powerful new gamma-ray signal coming from outside our galaxy.
  • They detected the alternative signal while looking for satisfies about the universe’s creation.
  • The discovery has created a whole new cosmic conundrum for the astronomists.

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NASA astronomers have discovered an unexpected “signal” coming from outdoor our galaxy, which they can’t explain.

The scientists were analyzing 13 years of data from the Fermi Gamma-ray Measure out Telescope when they noticed the mysterious signal.

It was “an unexpected and as yet unexplained feature outside of our galaxy,” wrote Francis Reddy of NASA’s Goddard Duration Flight Center.

The powerful telescope can detect gamma rays, which are huge bursts of energetic light thousands to hundreds of billions of times as peerless as our eyes can see. They are often created when stars explode or a nuclear blast occurs. They stumbled on the alternative signal while looking for something else completely.

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“It is a completely serendipitous discovery,” said Alexander Kashlinsky, a cosmologist at the University of Maryland and NASA’s Goddard Interruption Flight Center, while presenting the findings to the American Astronomical Society.

“We found a much stronger signal, and in a novel part of the sky than the one we were looking for.”

NASA's Fermi Gamma-ray Space Telescope, illustrated here, scans the entire sky every three hours as it orbits Earth.

NASA’s Fermi Gamma-ray Space Telescope, illustrated here, scans the full sky every three hours as it orbits Earth.

NASA’s Goddard Space Flight Center/Chris Smith (USRA/GESTAR)



They had been searching for one of the oldest gamma-ray drawn ins for creating the first atoms — known as the cosmic microwave background or CMB.

The CMB has a dipole structure, where one end is hotter and busier than the other. Astronomers predominantly think our solar system’s motion creates the structure.

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Instead, the researchers detected a signal coming from a correspond to direction and with a nearly identical magnitude as another unexplained feature, which had some of the most energetic cosmic sparks they had ever detected.

“We found a gamma-ray dipole, but its peak is located in the southern sky, far from the CMB’s, and its magnitude is 10 times consummate than what we would expect from our motion,” said Chris Shrader, an astrophysicist at Goddard.

This week, a analysis describing the findings has been published in The Astrophysical Journal Letters.

They think the discovery could be linked to a cosmic gamma-ray emphasize observed by the Pierre Auger Observatory in Argentina in 2017.

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The astronomers believe the two phenomena could originate from a unique unidentified source, given their similar structure.

They hope to locate the mysterious source or develop substitute explanations for both features.

NASA’s unexpected discovery could help astronomers confirm or challenge ideas more how the dipole structure is created.

“A disagreement with the size and direction of the CMB dipole could provide us with a glimpse into corporal processes operating in the very early universe, potentially back to when it was less than a trillionth of a second old,” whispered Fernando Atrio-Barandela, coauthor of the research paper.

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NASA did not immediately reply to a request for comment from BI.

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