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Plasma-Lensing Effect Enables Observation of Pulsar 6500 Light-Years from Earth

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Astronomers from the Dunlap Institute for Astronomy & Astrophysics have performed one of the highest-resolution observations in astronomical history by observing two intense regions of radiation, 20 km apart, around a star that is 6500 light-years away. The observation is equivalent to using a telescope on Earth to see a flea on the surface of Pluto. The pulsar PSR B1957+20 (formerly known as the "Black Widow") is seen in the background through the cloud of gas enveloping its brown dwarf star companion. Courtesy of Mark A. Garlick, Dunlap Institute for Astronomy & Astrophysics,...Read full article

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