File:Transit Method of Detecting Extrasolar Planets.jpg
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DescriptionTransit Method of Detecting Extrasolar Planets.jpg |
English: When a planet crosses in front of its star as viewed by an observer, the event is called a transit. Transits by terrestrial planets produce a small change in a star's brightness of about 1/10,000 (100 parts per million, ppm), lasting for 2 to 16 hours. This change must be absolutely periodic if it is caused by a planet. In addition, all transits produced by the same planet must be of the same change in brightness and last the same amount of time, thus providing a highly repeatable signal and robust detection method. |
Date | |
Source | http://www.nasa.gov/mission_pages/kepler/multimedia/images/kepler-transit-graph.html |
Author | NASA |
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Public domainPublic domainfalsefalse |
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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current | 22:54, 7 September 2012 | 1,280 × 720 (28 KB) | Stas1995 (talk | contribs) | User created page with UploadWizard |
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