Pulsars are dense compact spinning objects. From your link: "Pulsars are neutron stars that rotate at very high speeds and appear to emit radio pulses at extre

Pulsars are dense compact spinning objects. From your link: "Pulsars are neutron stars that rotate at very high speeds and appear to emit radio pulses at extremely regular intervals. The pulses are actually all we see of a radio beam that is focused by the star’s magnetic field and swept around like a lighthouse beacon."