"Dammit Snarfle, I told you if we wanted to vaporize those hairless apes we needed to get started on our gamma-ray zapper before the bloody planet was half-way across the universe!"

Astronomers think they know what caused the brightest ever gamma-ray burst, which was observed in March: a tightly beamed jet of matter that happened to be aimed almost directly at Earth.

And yes, I do know there's an inconsistency in there. Never let the facts get in the way of a really cheesy joke!