1967, the first pulsating radio source (pulsar) was detected by an alert graduate student, Jocelyn Bell, then working under the direction of Prof. Anthony Hewish at the Mullard Radio Astronomy Observatory, Cambridge, England.
1820 - Friedrich Engels - German Philosopher - Collaborator of Karl Marx
1950 - Russell Alan Hulse American physicist - in 1993 shared the Nobel Prize for Physics with his former teacher, the astrophysicist Joseph H. Taylor, Jr. - Discovery of the first binary pulsar (1974).
Zig Ziglar, American author, popular sales trainer and motivational speaker died.
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