Pulsar (noun)

1. A celestial object that emits regular pulses of radiation in the form of radio waves, X-rays, or visible light.
2. A neutron star that rotates rapidly and emits bursts of radiation in the form of radio waves and X-rays.

Origin:

Coined by the british astronomer jocelyn bell burnell in 1968, from pulse + -ar (as in quasar).

Examples:

1. The pulsar at the center of the Crab Nebula is one of the most well-studied pulsars in the universe.
2. Astronomers were able to detect the pulses of radiation emitted by the pulsar.
3. The rotation of the pulsar caused it to emit pulses of light in a regular pattern.
4. The neutron star was determined to be a pulsar, based on its emission of regular pulses of radiation.
5. The study of pulsars has helped scientists learn more about the universe and the nature of neutron stars.