| 1932 | Neutron discovered |
| 1933 | Baade and Zwicky hypothesize existence of stars
composed of neutrons |
| 1939 | Oppenheimer and Volkoff publish theory of
neutron stars,
with sizes of 10 km and surface temperatures of 10 million
degrees |
| 1967 | Pulsars discovered by Bell-Burnell and Hewish.
Gamma-ray bursts also discovered by military satellites
(information classified). |
| 1968 | Pulsar discovery announced. Crab Nebula
pulsar discovered. |
| 1969 | Spin-down of pulsars measured. |
| 1974 | Nobel prize
awarded to Hewish for "pioneering research in
radio astrophysics", including his "decisive role in the
discovery of pulsars". |
| 1975 | Binary pulsar PSR 1913+16
discovered by Hulse and Taylor. |
| 1976 | Taylor et al publish further observations of
PSR 1913+16 that show accord
with predictions of general relativity. |
| 1982 | Millisecond pulsar
PSR 1937+21 discovered by Backer and his colleagues. |
| 1992 | Wolszczan and Frail discovery planets around
PSR 1257+12 |
| 1992 | Nobel prize
awarded to Hulse and Taylor. |
