It came from a galaxy far, far away.
A single, sudden burst of radio waves. And then it was gone.
The so-called 'Lorimer' burst was spotted in 2007 -- and has been baffling scientists ever since
http://www.huffingtonpost.ca/2013/07/05/lorimer-burst-radio-waves-galaxy_n_3549902.html?ir=Science&ref=topbar