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Current state of modeling the photochemistry of Titan ’ s mutually dependent atmosphere and ionosphere

• E. H. Wilson, Sushil K. Atreya

Detection of methane in the atmosphere of Mars.

• Vittorio Formisano, Sushil K. Atreya, Thérèse Encrenaz, Nikolai Ignatiev, Marco Giuranna
• Science
• 2004

We report a detection of methane in the martian atmosphere by the Planetary Fourier Spectrometer onboard the Mars Express spacecraft. The global average methane mixing ratio is found to be 10 +/- 5… (More)

A comparison of the atmospheres of Jupiter and Saturn: deep atmospheric composition, cloud structure, vertical mixing, and origin.

• Sushil K. Atreya, M. H. Wong, +5 authors Thérèse Encrenaz
• Planetary and space science
• 1999

We present our current understanding of the composition, vertical mixing, cloud structure and the origin of the atmospheres of Jupiter and Saturn. Available observations point to a much more vigorous… (More)

The abundances of constituents of Titan's atmosphere from the GCMS instrument on the Huygens probe.

• Heinrich Niemann, Sushil K. Atreya, +15 authors S. H. Way
• Nature
• 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… (More)

Composition of Titan’s lower atmosphere and simple surface volatiles as measured by the Cassini‐Huygens probe gas chromatograph mass spectrometer experiment

• Heinrich Niemann, Sushil K. Atreya, +7 authors François Raulin
• 2010

[1] The Cassini‐Huygens probe gas chromatograph mass spectrometer (GCMS) determined the composition of the Titan atmosphere from ∼140 km altitude to the surface. After landing, it returned… (More)

Galileo Probe Measurements of D/h and 3he/4he in Jupiter’s Atmosphere

• P R Mahaffy, Sushil K. Atreya
• 1998

The Galileo Probe Mass Spectrometer measurements in the atmosphere of Jupiter give D/H = (2:6 0:7) 10 5 He= He = (1:66 0:05) 10 4 These ratios supercede earlier results by Niemann et al. (1996) and… (More)

Methane and related trace species on Mars: Origin, loss, implications for life, and habitability

• Sushil K. Atreya, P R Mahaffy, Ah-San Wong
• 2006

One of the most puzzling aspects of Mars is that organics have not yet been found on the surface. The simplest of organic molecules, methane, was detected in the Martian atmosphere for the first time… (More)

Abundance and isotopic composition of gases in the martian atmosphere from the Curiosity rover.

• P R Mahaffy, Christopher R. Webster, +11 authors Melissa Trainer
• Science
• 2013

Volume mixing and isotope ratios secured with repeated atmospheric measurements taken with the Sample Analysis at Mars instrument suite on the Curiosity rover are: carbon dioxide (CO2),… (More)

A low-temperature origin for the planetesimals that formed Jupiter.

• Tobias C. Owen, Paul N Mahaffy, +4 authors Irene E De Pater
• Nature
• 1999

The four giant planets in the Solar System have abundances of 'metals' (elements heavier than helium), relative to hydrogen, that are much higher than observed in the Sun. In order to explain this,… (More)

Oxidant enhancement in martian dust devils and storms: implications for life and habitability.

• Sushil K. Atreya, Ah-San Wong, +7 authors David C. Catling
• Astrobiology
• 2006

We investigate a new mechanism for producing oxidants, especially hydrogen peroxide (H2O2), on Mars. Large-scale electrostatic fields generated by charged sand and dust in the martian dust devils and… (More)

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