Two years of grueling labor led Jocelyn Bell Burnell and Antony Hewish to build the first ever radio telescope at the Mullard Radio Astronomy Observatory. Spread over four and a half acres of land, this array consisted of 2,048 dipoles that constantly surveyed the sky at a time resolution of about 0.1 second. The telescope was specifically built to study quasars, now known as super massive black holes. Bell achieved immediate results as she discovered abundant quasars with this telescope. But on August 6, 1967, Bell observed and logged for the first time, an odd stretch of data occupying about 5 millimeters in the 500 meters of paper readouts.

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