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File:Sodium in atmosphere of exoplanet HD 209458.jpg
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File:Sodium in atmosphere of exoplanet HD 209458.jpg
analysis
of
the
atmosphere
of
a planet outside our solar system. Their unique observations show it is possible to measure the chemical makeup
of
extra-solar
File:Exoplanet HD 209458.jpg
English applies to jurisdiction: United States
of
America determination method: work
of
the federal government
of
the United States