CHINA TOPIX

12/23/2024 07:49:35 am

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Black-hole-powered galaxies called blazars are the most common sources detected by NASA's Fermi Gamma-ray Space Telescope.

Most Powerful Gamma Rays Travelled Halfway Across the Universe to Reach Earth

Scientists detected some very ancient and powerful gamma rays, half the age of the universe from a distant galaxy some 7.6 billion light years away.

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