Mariner 6 and Mariner 7 Ultraviolet Spectrometer: In-Flight Measurements of Simulated Jupiter Atmosphere

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Science  28 May 1971:
Vol. 172, Issue 3986, pp. 941-943
DOI: 10.1126/science.172.3986.941


An experiment has been performed in interplanetary space which closely simulates the observations that would be madef by an ultraviolet spectrometer observing the atmospheres of the jovian planets. A mixture of ammonia, nitrogen, and hydrogen was released from the Mariner spacecraft, and spectra were recorded while these gases were illuminated by sunlight. The principal emissions observed were the HI 1216-angstrom Lyman-α line, the H2 B-X Lyman bands, and the NH c-a and A-X bands.