space navigation
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 could navigate autonomously by triangulating off the X-ray light emitted from pulsars scattered throughout the universe. The new system promises to be for space what GPS is for Earth; pretty useful when your stranded out past Saturn wondering "maybe that should have been a right at Titan..."
More »
io9
