Great Ball of Fire: X-Rays Spot Mass of Gas 5 Billion Times Larger Than Solar System
By John Johnson Jr., Times Staff Writer
June 17, 2006
Scientists have discovered the largest ball of hot gas ever found, a monstrous sphere of fire streaking through a galaxy cluster millions of light-years away.
"The size and velocity of this gas ball is truly fantastic," said physicist Alexis Finoguenov of the University of Maryland, Baltimore County. "This is likely a massive building block being delivered to one of the largest assembly of galaxies we know."
The gas ball, which was found using the European XMMNewton X-ray space observatory, is 3 million light-years across — 5 billion times the size of our solar system. Images show it as a circular X-ray glow with a stumpy comet-like tail.
The ball is moving through a galaxy cluster called Abell 3266, which contains hundreds of galaxies.
The gas ball and other gas formations are thought to be held together by unseen dark matter that many scientists think makes up as much as 90% of the universe.
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