Gamma-ray detection:

Gamma ray sources are notable on Earth, mostly from thunderstorms, nuclear explosions, and radioactive decay.

However, detection of gamma rays from galaxies is very rare, and even if the Fermi Space Telescope does not detect any of them, this does not mean that galaxies do not emit gamma rays.

In support of the first detection of gamma rays from galaxies, I quote from NASA articles titled, "Gamma-ray Astronomy - Imagine the Universe!"

Gamma-ray detection is quoted below,

"The first detection of significant gamma-ray emission from our galaxy was made in 1967 by the the gamma-ray detector aboard the OSO-3 satellite. In fact, OSO-3 also detected the first gamma-rays from outside our galaxy! All told, it detected 621 cosmic gamma rays."

#detectionofgammaray #gammaray

#gammarayburst