Is this ET? Mystery of strange radio bursts from space

"If the result holds up, says Hippke, 'there is something really interesting we need to understand. This will either be new physics, like a new kind of pulsar, or, in the end, if we can exclude everything else, an ET.'

Hippke is cautious, but notes that remote possibilities are still possibilities. 'When you set out to search for something new,' he says, 'you might find something unexpected.'"