What are pulsars? Rapidly rotating neutron stars that are characterized by the emission of periodic pulses of radiation. These interesting objects have magnetic fields that are so strong that streams of particles are directed along their two magnetic poles.

In 1967, Professor Dame Jocelyn Bell Burnell, during her postgraduate studies at New Hall and research at Cambridge's Cavendish Laboratory, achieved a groundbreaking breakthrough by uncovering the existence of pulsars.

Pulsars are extraordinary compact stars, with a diameter that does not exceed 20 km (12 miles), comprised predominantly of neutrons. Comparatively, the mass of a pulsar ranges from 1.18 to 1.97 times greater than that of our Sun.

The neutron star J0740+6620, which contains 2.17 times the mass of the Sun in a disc just 30 km wide, is the most massive neutron star yet detected.

Scientists explain that the apparent faster-than-light motion of the pulses is attributed to the interplay between the inherent time scales of the pulse itself and those within the medium.

The fastest known pulsar, PSR J17482446ad, spins at 716 Hz (times per second), or 43,000 rotations per minute.

4715 is definitely the closest millisecond pulsar to Earth.

Pulsars are used to measure gravitational waves which does not produce light. By measuring the light of the pulsars the scientists are able to measure the ripples in space time. Therefore, they are also called the cosmic lighthouses.