Description from other version: An EinsteinCross reveals the presence of a huge gravitational lens in the distant reaches of the universe. Astronomers discovered
Description from other version: An EinsteinCross reveals the presence of a huge gravitational lens in the distant reaches of the universe. Astronomers discovered
of the gravitational lens G2237 + 0305, sometimes referred to as the "EinsteinCross". determination method: work of the federal government of the United