Topics » Science & Technology   Jan. 12, 2012

Galaxy Clusters, Blue Stars and Cosmic Explosions

Giant Galaxy Cluster

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Photo: X-ray: NASA/CXC/Rutgers/J.Hughes et al, Optical

Tiny Planetary SystemJupiter vs. KOI-961Supernova Mystery Explained?Blue Stars Large Magellanic Cloud GalaxyInterstellar Dust CloudCassiopeia and CepheusGiant Galaxy Cluster

Giant Galaxy Cluster

In the far-flung distant universe, 7 billion light years away, a super galaxy cluster has been discovered by an international team of scientists. It's so astonishingly enormous that it's been dubbed El Gordo -- Spanish for "the fat one." It is the most massive, hottest, brightest galaxy cluster ever seen, and much of its mass is made up of dark matter. In fact, scientists believe what they're seeing is two separate clusters colliding at several million miles per hour, wrenching normal matter apart from the dark matter.

Photo Essay

Photo Essay