X-ray light (red) ripples out from an erupting black hole within the binary system V404 Cygni. Technically, the ripples are echoes. They form when x-ray jets from the black hole bounce off surrounding dust particles.
Feed your need for heavenly views of the universe with our pick of the most awe-inspiring space pictures. This week, Saturn's rings "pierce" one of its moons and a mission to bring back a piece of an asteroid gets one step closer to launch.