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Jocelyn Bell Burnell and the Discovery of Pulsars

Jocelyn Bell Burnell and the Discovery of Pulsars

Harald Sack
On November 28, 1967, Jocelyn Bell Burnell and Anthony Hewish discovered the first Pulsar, a fast rotating neutron star that emits a beam of electromagnetic radiation. The radiation of a pulsar can only be observed when the beam of emission is pointing toward the Earth, much the way a lighthouse can only be seen when the light is pointed in the direction of an observer, and is responsible for the pulsed appearance…
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astronomy
The Arecibo Radio Telescope – Looking for Extraterrestrial Signals

The Arecibo Radio Telescope – Looking for Extraterrestrial Signals

Harald Sack
On November 1, 1963, the Arecibo radio telescope, by that time the earth‘s largest radio telescope, has been inaugurated in Arecibo, Puerto Rico. It is operated by the company SRI International under cooperative agreement with the National Science Foundation and is also called the National Astronomy and Ionosphere Center, although “NAIC” refers to both the observatory and the staff that operates it. Construction and Functionality The Arecibo telescope was built between the…
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