Pulsars are often extremely precise in their timings, especially those with rotation rates on millisecond scales, 144 of which are included in the catalog. This means that they can be used for applications like space navigation, which is important as more missions take to the stars. We can also use them to detect gravitational waves, based on anomalies in the timing of the signals. These can suggest expansions and contractions of space-time that occur when a gravitational wave from a massive event rolls through
