China is already well on the way to establishing its own version of America’s GPS network with its Beidou satellite constellation, but now it is seeking to take navigation and timing to stellar levels.

In November China will launch the X-ray pulsar navigation satellite — XPNAV-1 — a satellite that will conduct the world’s first test of the possibilities of using the regular emission of X-ray signals from pulsars for spacecraft navigation.

The spacecraft will attempt to triangulate its position relative to the Sun using the highly regular emissions from pulsars.

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