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- Publications
- Influence
The abundances of constituents of Titan's atmosphere from the GCMS instrument on the Huygens probe
- H. Niemann, S. Atreya, +15 authors S. Way
- Chemistry, Medicine
- Nature
- 8 December 2005
Saturn's largest moon, Titan, remains an enigma, explored only by remote sensing from Earth, and by the Voyager and Cassini spacecraft. The most puzzling aspects include the origin of the molecular… Expand
The composition of the Jovian atmosphere as determined by the Galileo probe mass spectrometer.
- H. Niemann, S. Atreya, +9 authors S. Way
- Medicine, Geology
- Journal of geophysical research
- 25 September 1998
The Galileo probe mass spectrometer determined the composition of the Jovian atmosphere for species with masses between 2 and 150 amu from 0.5 to 21.1 bars. This paper presents the results of… Expand
Smoke and dust particles of meteoric origin in the mesosphere and stratosphere
Abstract A height profile of ablated mass from meteors is calculated, assuming an incoming mass of 10−16 g cm−2 s−1 (44 metric tons per day) and the velocity distribution of Southworth and Sekanina,… Expand
Helium in Jupiter's atmosphere: Results from the Galileo probe Helium Interferometer Experiment
- U. Zahn, D. Hunten, Gerald A. Lehmacher
- Physics
- 25 September 1998
On December 7, 1995, the NASA Galileo probe provided the first in situ measurements of the helium abundance in the atmosphere of Jupiter. Our Jamin interferometer measured precisely the refractive… Expand
The microphysics of the clouds of Venus: Results of the Pioneer Venus Particle Size Spectrometer Experiment
- R. Knollenberg, D. Hunten
- Geology
- 30 December 1980
The results of the particle size spectrometer experiment on the Pioneer Venus sounder probe are presented. The vertical cloud structure is found to consist of three primary cloud regions of… Expand
The Escape of Light Gases from Planetary Atmospheres
- D. Hunten
- Physics
- 1 November 1973
Abstract The Jeans-Spitzer treatment of atmospheric escape by evaporation must be supplemented, for a mixture of gases, by a discussion of the mutual diffusion and mixing of the components. A recent… Expand
Mass fractionation in hydrodynamic escape
We show that mass fractionation occurs during the course of hydrodynamic escape of gases from the atmosphere of an inner planet. Light gases escape more readily than heavy gases. The resultant… Expand
A photometric unit for the airglow and aurora
- D. Hunten, F. Roach, J. Chamberlain
- Physics
- 1 June 1956
It is suggested that the angular surface brightness B of these sources be measured in units of 106 quanta/cm2 sec sterad. The number quoted should be 4πB, and the unit of 4πB should be called the… Expand
Understanding the Lunar Surface and Space-Moon Interactions
- P. Lucey, R. Korotev, +15 authors S. Maurice
- Geology
- 2006
The surface of the Moon is a critical boundary that shapes our understanding of the Moon as a whole. All geologic mapping and remote sensing techniques utilize only the outermost portion of the Moon.… Expand
The Galileo Probe Mass Spectrometer: Composition of Jupiter's Atmosphere
- H. Niemann, S. Atreya, +10 authors S. Way
- Chemistry, Medicine
- Science
- 10 May 1996
The composition of the jovian atmosphere from 0.5 to 21 bars along the descent trajectory was determined by a quadrupole mass spectrometer on the Galileo probe. The mixing ratio of He (helium) to H2… Expand