Dr. Bryan Gaensler is the author of the book "Extreme Cosmos: A Guided Tour of the Fastest, Brightest, Hottest, Heaviest, Oldest and Most Amazing Aspects of Our Universe." Gaensler talks to us about the fastest object in the universe, and explains why astronomers don't always aim to break universal records in their research, even if the news headlines can seem a little over-eager to do just that.