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Pulsars were first discovered by Jocelyn Bell, a graduate student, in 1967 in the radio region of the electromagnetic spectrum. At first, it was thought that such regular, rapid signals could not be natural in origin. However, intelligent beings were soon replaced by neutron stars as the explanation.

Last Modified: October 2004

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This page last updated: Monday, 04-Oct-2004 13:28:00 EDT