Often referred to as Cosmic Lighthouses, neutron stars (also known as pulsars) are incredibly dense stars that shoot out X-rays at a predictable rate, like a lighthouse.
Read more on them here: NEW NASA MISSION TO PROBE CELESTIAL LIGHTHOUSES
A new NASA mission proposes to examine the nature of these neutron stars as well as how accurately we can use these beacons as celestial guiding points for deep space missions.
Pulsars spin at a dizzying rate of anywhere from seconds to milliseconds. As they whip around in their rotation, the hotspots flash periodically within sight of Earth. X-ray brightness from the pulsar increases when the hotspots comes within view, then dims as the hotspots turn away.
(There are a) millisecond class of pulsars that spin as rapidly as 700 times a second.These pulsars have such a consistent rotation rate that they are considered accurate celestial clocks. In space, they could be used in a similar way to global positioning satellites that provide navigation data to the military and civilians, particularly in vehicles.
On May 6, 2014 a new article on an ultra-precise pulsar was published by Janet Fang