the Physics Central
the American Physical Society
This article tells of astronomers' efforts to detect extra-solar planets. It describes the methods employed in finding these planets, such as the Hubble Space Telescope and by observing the wobble of the parent star, and the detection of a "first generation" planet. Links to research are provided.
%0 Electronic Source %A Physics Central, %T Physics in Action: Old as the M4 Planet %I American Physical Society %V 2017 %N 28 April 2017 %9 text/html %U http://www.physicscentral.com/explore/action/planet.cfm
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