The astronomers Jocelyne Bell and Anthony Hewish seen amongst the wires of the radio telescope in East Anglia, England, with which they discovered in 1967 the first pulsar. Pulsars are very compact neutron stars that are spinning around at very high speed (several times per second). They also emit a beam of radiation which, due the pulsar fast rotation, creates a light-house effect. Bell and Hewish were investigating the variability of some radio sources when they discovered a source in Lacerta, which was called LMG1, producing a set of equally spaced radio pulses. In 1974 Hewish won the Nobel Prize for physics for this work.