Pulsars
Pulsars are highly magnetized, rotating neutron stars that emit beams of electromagnetic radiation out of their magnetic poles. As the star rotates, the beam of radiation sweeps across the sky, much like the beam of a lighthouse. Pulsars are incredibly useful tools for studying the properties of matter under extreme conditions, such as those found in the cores of neutron stars. They are also used for navigation in space, as their precise timing can be used to determine the position of a spacecraft. Pulsars were first discovered in 1967 by Jocelyn Bell Burnell and Antony Hewish.
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