While we sit comfortably in our galaxy, we may forget that the universe as a whole can be a scary place. For instance, scientists recently discovered a sudden burst of x-ray light 10.7 billion light years away from Earth. They believe it was likely some kind of destructive, cataclysmic event. The energy it produced was a thousand times more powerful than all the stars in our galaxy. They aren’t really sure what it was or what caused it at all.