GREENBELT, Md., March 5 (UPI) -- The gravitational field around a massive cluster of galaxies, acting as a natural lens, has created a cartoon-like "space invader" image, U.S. astronomers say.
The field around the cluster Abell 68 has brightened and magnified the light coming from very distant background galaxies to create what looks like a simulated alien from the classic 1970s video game "Space Invaders!" NASA reported Tuesday.