Gamma rays are molecules of light including energies which are more than a million times higher than the photons which we notice with our eyes.
Hence, the scientists have made the state-of-the-art gamma-ray instrument, which was a major NASA’s mission. Consequently, this instrument is now operated as the Fermi Gamma Ray Space Telescope which has the capabilities to resolve and find the faint sources.
In 2010, Fermi found a surprising thing, something in the Milky Way’s centre, which looked like a pair of huge, gamma-ray-emitting bubbles which covered almost 10 percent of the sky. It was been suspected that the prime source of the bubbles was the black hole. Accordingly, most of the galaxies holds such giant black holes in their centres. And these blackholes gulps down space matter. Hence after their fed, they eventually throw out huge, outflowing jets.
In the Milky Way, the important source of the gamma rays is when the high-energy molecules known as cosmic rays, collide with the very tenuous gas between the stars. However, it has been found that the stars were only responsible for the gamma rays.
