Enceladus' Water Vapor Plume
- C. Hansen, L. Esposito, R. West
- Physics, GeologyScience
- 10 March 2006
The Cassini spacecraft flew close to Saturn's small moon Enceladus three times in 2005 and observed stellar occultations on two flybys and confirmed the existence, composition, and regionally confined nature of a water vapor plume in the south polar region of Ence Gladus.
The Mars Atmosphere and Volatile Evolution (MAVEN) Mission
- B. Jakosky, R. Lin, R. Zurek
- Physics
- 10 February 2013
The MAVEN spacecraft launched in November 2013, arrived at Mars in September 2014, and completed commissioning and began its one-Earth-year primary science mission in November 2014. The orbiter’s…
The Cassini Ultraviolet Imaging Spectrograph Investigation
- L. Esposito, C. Barth, Y. Yung
- Physics
- 1 November 2004
The Cassini Ultraviolet Imaging Spectrograph (UVIS) is part of the remote sensing payload of the Cassini orbiter spacecraft. UVIS has two spectrographic channels that provide images and spectra…
Mariner 6 and 7 Ultraviolet Spectrometer Experiment: Upper atmosphere data
- C. Barth, C. Hord, J. B. Pearce, K. Kelly, G. Anderson, A. Stewart
- Physics
- 1 April 1971
Mariner 6 and 7 observations of the Mars upper atmosphere show the ultraviolet emission spectrum to consist of the CO2+ A-X and B-X bands, the CO a-X and A-X bands, the CO+ B-X bands, the C I 1561-…
Galileo ultraviolet spectrometer observations of atomic hydrogen in the atmosphere of Ganymede
Atomic hydrogen Lyman alpha radiation (121.6 nm) has been measured in emission from the atmosphere of Ganymede with the Galileo ultraviolet spectrometer. An exospheric model with the following…
Water vapour jets inside the plume of gas leaving Enceladus
- C. Hansen, L. Esposito, F. Tian
- PhysicsNature
- 27 November 2008
Observations of an occultation of a star by the Enceladus plume on 24 October 2007 revealed four high-density gas jets superimposed on the background plume, which supports the hypothesis that the source of the plume is liquid water, with gas accelerated to supersonic velocity in nozzle-like channels.
Monte Carlo simulations of the water vapor plumes on Enceladus
- F. Tian, A. Stewart, O. Toon, K. Larsen, L. Esposito
- Physics
- 1 May 2007
Hot oxygen atoms in the upper atmosphere of Venus
- A. Nagy, T. Cravens, J. Yee, A. Stewart
- Physics
- 1 June 1981
The energy distribution of “hot” oxygen atoms in the upper atmosphere of Venus was calculated using two different numerical methods. The two different approaches were based on 1) 2-stream transport…
The Cassini UVIS Stellar Probe of the Titan Atmosphere
- D. Shemansky, A. Stewart, R. West, L. Esposito, J. T. Hallett, Xianming Liu
- PhysicsScience
- 13 May 2005
The Cassini Ultraviolet Imaging Spectrometer (UVIS) observed the extinction of photons from two stars by the atmosphere of Titan during the Titan flyby to determine the asymptotic kinetic temperature at the top of the atmosphere.
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