CHRIS BUTLER / SCIENCE PHOTO LIBRARY CHRIS BUTLER / SCIENCE PHOTO LIBRARY
Active galaxy. Illustration of an active spiral galaxy with relativistic jets shooting out of its glowing nucleus. Active galaxies emit huge amounts of energy from a powerful source, often thought to be a supermassive central black hole. In this case the energy is emitted as jets - streams of plasma (charged particles) ejected at near light-speed from close to the black hole's centre, where matter is torn apart by colossal tidal forces.
Model release not required. Property release not required.