Space News

AP Photo/NASA

From the Associated Press: In this undated image made available from NASA on Sunday March 5, 2006, which shows the central region of a group of galaxies 300 million light-years away known as Stephan's Quintet. The distant galaxy is generating a 'sonic boom' of cosmic proportions, astronomers have discovered, as one of the galaxies falls towards the others at high speed, ploughing through a cloud of hydrogen gas travelling at 540.6 miles per second - 100 times faster than the speed of sound. The effect of this is similar to the sonic boom created by a fast jet, according to astonomers at the American space agency Nasa, using the Spitzer space telescope, and their findings are to be published later in March, in the Astrophysical Journal.