With GPS it's harder than ever to get lost here on Earth, but deep space is a different story. Mind-boggling distances, three-dimensional travel and a lack of obvious landmarks all complicate spacecraft navigation. Pulsars have been proposed as a solution in the past, and now a NASA team has demonstrated the viability of the idea, with an experiment showing that a spacecraft can constantly and automatically calculate its position by tracking the perfectly-predictable X-ray signals from an array of pulsars.
.. Continue Reading NASA tests X-ray-based "Space-GPS" navigation systemCategory: Space
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