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A ball of gas more massive than a billion suns is hurtling like an enormous comet through the interior of a distant galaxy cluster. The massive structure is held together by mysterious dark matter, astronomers said today, but it is steadily breaking apart and becoming fuel for new stars. "This is likely a massive building block being delivered to one of the largest assembly of galaxies we know," said study team member Alexis Finoguenov of the University of Maryland, Baltimore County. The finding is detailed in the June 6 issue of Astrophysical Journal. Great ball of fire The gas blob...

SALT LAKE CITY - Fossils discovered in southern Utah are from a new species of birdlike dinosaur that resembled a 7-foot-tall brightly colored turkey and could run up to 25 mph, scientists said Tuesday. Fossils of the meat-eater's hand-like claw and foot were found in the Grand Staircase-Escalante National Monument near the Arizona border, giving paleontologists reason to believe some dinosaurs known as raptors roamed from Canada to northern New Mexico about 75 million years ago. Much smaller variations of the dinosaur had been found previously in Montana, South Dakota and the Canadian province of Alberta. "This is the southernmost...