A laboratory demonstration of the capability to image an Earth-like extrasolar planet

John T. Trauger () and Wesley A. Traub
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John T. Trauger: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109, USA
Wesley A. Traub: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109, USA

Nature, 2007, vol. 446, issue 7137, 771-773

Abstract: Down to Earths There are Earth-like extrasolar planets out there, but will we ever be able to see them? It's a tough ask: such a planet orbiting a nearby star is 1×1010 times fainter than the star at a tiny angular separation of a tenth of an arcsecond or less. But now John Trauger and Wesley Traub report a laboratory demonstration of a technique that could be used on a space mission to detect an Earth-twin. Their system uses the coronagraph principle to suppress the starlight, and simple image processing to surpass the sensitivity of previously reported lab techniques by factors of 10,000 or more, and exceed the best results at ground-based observatories by factors of 100,000 or more.

Date: 2007
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DOI: 10.1038/nature05729

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