X線天文衛星「すざく」が銀河の外で大量のレアメタルを発見

http://www.isas.jaxa.jp/j/topics/topics/2009/1102.shtml

Suzaku Spies Treasure Trove of Intergalactic Metal
http://www.nasa.gov/mission_pages/astro-e2/news/intergalactic_metal.html