Alan Kogut of NASA's Goddard Space Flight Center says he and his colleagues have discovered a mysterious "booming noise" coming from space that's six times more powerful than all other space radio sources combined.
For now, the origin of the signal remains a mystery.
"We really don't know what it is,"said team member Michael Seiffert of NASA's Jet Propulsion Laboratory in Pasadena, Calif.
And not only has it presented astronomers with a new puzzle, it is obscuring the sought-for signal from the earliest stars.
Mystery Roar from Faraway Space Detected