Titan is the only moon with a substantial atmosphere, the only other thick N2 atmosphere
besides Earth's, the site of extraordinarily complex atmospheric chemistry that far surpasses …

Until a decade ago, the only anion observed to play a prominent role in astrophysics was H–
. The bound–free transitions in H–dominate the visible opacity in stars with photospheric …

Photochemistry is a fundamental process of planetary atmospheres that regulates the
atmospheric composition and stability. However, no unambiguous photochemical products …

Physical laws—such as the laws of motion, gravity, electromagnetism, and thermodynamics—
codify the general behavior of varied macroscopic natural systems across space and time …

Methane has been proposed as an exoplanet biosignature. Imminent observations with the
James Webb Space Telescope may enable methane detections on potentially habitable …

Recognizing whether a planet can support life is a primary goal of future exoplanet spectral
characterization missions, but past research on habitability assessment has largely ignored …

We present a one-dimensional coupled ion-neutral photochemical kinetics and diffusion
model to study the atmospheric composition of Titan in light of new theoretical kinetics …

The recent inference of sulfur dioxide (SO2) in the atmosphere of the hot (approximately
1,100 K), Saturn-mass exoplanet WASP-39b from near-infrared JWST observations …

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 …

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 …