Pulsars are highly-magnetized, rotating neutron stars that emit narrow beams of electromagnetic radiation. These beams are observed as pulses of radiation at regular intervals as the pulsar rotates. Pulsars were first discovered in 1967 and have since been studied extensively for their potential to provide insights into topics such as general relativity, nuclear physics, and the structure of the Universe. Researchers have also used pulsars to study phenomena such as gravitational waves, interstellar magnetic fields, and the behavior of matter in extreme conditions.