According to the existing laws of physics, it is impossible for any matter to move faster than the speed of light, but a recent astronomical observation challenged this law  The IC310 galaxy, which is far away from Earth, has an active black hole, and the matter that falls into the black hole produces gamma-ray shock waves  Some astronomers have found that the gamma ray travels faster than the speed of light because it takes only 4 8 minutes to cross the boundary of the black hole, while light takes 25 minutes to cover the distance
The law of constant speed of light has been tested many times in practice, and there are no counterexamples
 As a result, these astronomers propose that the law of constant speed of light needs to be modified