The U.S. Navy is preparing to shoot a faltering U.S. spy satellite out of the sky in the next two weeks using a tactical missile that was manufactured as a defensive weapon to head off enemy aircraft, the Pentagon announced.While it's not uncommon for space junk to fall out of the sky, military officials said they are particularly concerned in this case because much of the 1,000 pounds of the frozen rocket fuel called hydrazine on the spacecraft could survive the descent and pose health risks, such as damage to skin and lung tissue, if it lands in a populated area. (more)
