In space, no one can hear you scream.
Thats because space is a vacuum and there is no air. Air is required for sound waves to move around.
But there is noise in space. The kind of noise that astronomers and space folk talk of is radio waves and electromagnetic waves. These come from most everything in space, but are only really measurable from large sources, stars, quasars, galaxies and the such.
A team of astronomers, led by Alan Kogut of NASA’s Goddard Space Flight Center in Greenbelt, Md., have detected a ‘roar’ in space six times as loud as would be expected. Kogut described what they found at the 213th meeting of the American Astronomical Society.
“Something new and interesting going on in the universe.” Kogut said, “The universe really threw us a curve. Instead of the faint signal we hoped to find, here was this booming noise six times louder than anyone had predicted.”
Michael Seiffert of NASA’s Jet Propulsion Laboratory in Pasadena added, “We really don’t know what it is.”