The picture that emerges on the basis of the very first simultaneous observations using optical and X-ray and gamma of the new generation – telescopes, was much tougher than expected scientists, and calls into question the validity of current theories on the manner in which blazars generate radiation that they emit. The galaxy, known as PKS 2155-304, emit in opposite of jets of particles that travel at speeds close to the speed of light, when matter falls into supermassive black hole at the center of the galaxy, but this process is still poorly understood. In the case of blazar galaxy is oriented in such a way that we look directly at the jet. Galaxy PKS 2155-304 is from the Earth at a distance of 1.5 billion light-years away in the southern constellation of Southern Fish (Piscis Austrinus) and is usually detectable but very weak source of gamma – radiation. But when its jets erupt in the form of strong emission, as it was in 2006, the galaxy may become the brightest source in the sky with a maximum energy gamma radiation, which can observe scientists – nearly 50 trillion times greater than the amount of energy in the visible spectrum. However, only one gamma ray energy of powerful sources of monthly 'breaks' in the ozone layer of the Earth's atmosphere in a hole the size of one square yard. The absorption of the atmosphere of one of these gamma-ray produces a short-lived 'shower' of elementary particles. When these fast particles are carried through the atmosphere, there are weak flash of blue light.