The velocity of cosmic rays can go from a small fraction of the speed of light up to about .999999999999 times the speed of light. Since cosmic rays are matter (typically the bare nuclei of atoms), they CANNOT exceed the speed of light. They also cannot escape from the event horizon of black holes, but it looks as if black holes can generate relativistic jets of material out along their poles. But these particles are accelerated outside the black hole and so they (and any light generated there as well) can escape.
라는 글을 나사 cosmicopia에서 찾았는데 해석이 잘 되지않네요.
이 글의 해석과 우주선의 속도가 빛의 속도에는 미칠수 없는 이유 좀 알려 주시면 감사하겠습니다.
본인삭제금지
글쓰기