Now let's take a look at what pulsars are. They are known as the 'lighthouses' of the universe – rotating neutron stars that emit focused beams of electromagnetic radiation visible only if you’re in their path.

These stellar relics get their name for the way their emissions appear to be “pulsating” in space. Neutron stars are very dense, and have short, regular rotational periods. These produce very precise intervals between pulses that range roughly from milliseconds to seconds for an individual pulsar.

Pulsars are believed to be one of the candidates for high and ultra-high energy astro particles.