How to Find Your Way Home by the Light of a Pulsar

How do you navigate when you're floating out in deep space? By pulsar, that's how. In outer space (and even in Earth orbit) GPS doesn't do you a whole lot of good, so space scientists at the PLANS navigation conference in Monterey, CA this week have put together a couple of papers designed to show that a spacecraft… » 5/07/08 2:02pm 5/07/08 2:02pm