NASA astronomers have discovered an unexpected “signal” coming from outside our galaxy. This signal was detected accidentally while scientists were analyzing 13 years of data from the Fermi Gamma-ray Space Telescope.
This advanced telescope can detect gamma rays, which are huge bursts of energetic light. Gamma rays are often created when stars explode or nuclear explosions occur.
A paper explaining these findings was published on Wednesday (10/1/2024) in The Astrophysical Journal Letters.
Researchers initially looked for the oldest gamma rays
space illustration (pixabay.com/David Monje)
Researchers are in the process of searching for one of the oldest gamma-ray features to create the first atom. These rays are known as the cosmic microwave background or CMB.
Instead of finding CMB rays, the researchers detected a signal coming from the same direction as another unexplained feature. This signal has some of the most energetic cosmic particles they have ever detected.
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“We found a much stronger signal, and in a different part of the sky than we were looking for.” wrote Francis Reddy from NASA’s Goddard Space Flight Center on Thursday (11/1/2024).
2024-01-18 21:10:00
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