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- PULSAR
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- A rapidly rotating neutron star with a mass comparable to that of the Sun's, but collapsed into a sphere about 20 km
- across. Pulsars are divided into slow second pulsars and fast millisecond pulsars according to their speed of rotation.
- The latter are former double pulsars that have 'eaten' their partners and thus gained their huge speed of rotation.
- Pulsars are like beacons sending out regular flashes of electromagnetic radiation, varying from short-waved X rays to
- radio frequencies.
- Pulsars result from supernova explosions.
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- The first pulsar, emitting on radio frequencies, was discovered by British Antony Hewish and Jocelyn Bell in 1967.
- Over five hundred pulsars have been discovered to date.
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