Cosmic Treasure Trove of Heavy Metals Found

Cosmic Treasure Trove of Heavy Metals Found

An orbiting X-ray observatory has found the largest known reservoir of rare heavy metals in the universe.

The lightweights of the periodic table, hydrogen and helium, are the most abundant elements in the cosmos — they're the key fuels of stellar engines.

But more familiar to us Earthlings are the heavier elements that make up the rest of the table, though these heftier elements are rare in the universe at large.

Recently, astronomers used the Suzaku orbiting X-ray observatory, operated jointly by NASA and the Japanese space agency, to discover the largest known cache of rare metals in the universe to date.

Suzaku detected the elements chromium and manganese while observing the central region of the Perseus galaxy cluster, which lies 225 million light-years from Earth. The metallic atoms are part of the hot gas, or intergalactic medium, that lies between 190 galaxies within the cluster.

"This is the first detection of chromium and manganese from a cluster," says Takayuki Tamura, an astrophysicist at the Japan Aerospace Exploration Agency who led the Perseus study. "Previously, these metals were detected only from stars in the Milky Way or from other galaxies. This is the first detection in intergalactic space."