Results 81 to 90 of about 6,063 (251)
Frontiers in Astronomy and Space SciencesThe surfaces of airless bodies are constantly weathered by ions, meteoroids, and radiation, leading to the ejection of surface atoms to form a tenuous, collisionless atmosphere around the body.
S. Verkercke +8 more
doaj +1 more source
Non-detection of a Helium Exosphere for the Hot Jupiter WASP-12b [PDF]
Research Notes of the AAS, 2018 An exosphere was recently detected around the exoplanet WASP-107b, a low-density, warm Neptune, based on an absorption feature from metastable helium (which has a vacuum wavelength of 10833 \AA).
L. Kreidberg, A. Oklopčić
semanticscholar +1 more source
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract Mercury experiences the most intense and variable solar wind (SW) conditions in the solar system due to its close, eccentric orbit about the Sun. In addition to variation driven by coronal source and solar cycle, the SW arriving at Mercury varies periodically as the planet's heliocentric distance changes by over 50% per orbit.
Ryan M. Dewey +17 more
wiley +1 more source
3D-modeling of Callisto’s sputtered surface-exosphere environment [PDF]
, 2016 We study the stoichiometrical release of various surface elements caused by plasma sputtering from an assumed icy and non-icy (i.e. chondritic) surface into the exosphere of the Jovian satellite Callisto. We apply a 3D plasma planetary interaction hybrid
Lindqvist, Jesper +7 more
core
Mercury exosphere. III: Energetic characterization of its sodium component [PDF]
, 2013 International audienceMercury's sodium exosphere has been observed only few times with high spectral resolution from ground based observatories enabling the analysis of the emission spectra.
Mangano, Valeria +6 more
core +1 more source
Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.Abstract We present the results of the first geological mapping of the western half of the Eminescu Quadrangle (H09) on Mercury. Multiple data sets from the NASA MESSENGER Mercury Dual Imaging System instrument were used to produce a geological map covering the area between 72°E and 108°E longitude and 22.5°N and 22.5°S latitude.
M. El Yazidi +9 more
wiley +1 more source
Effects of Hot Oxygen Corona on Ion Escape From Venus‐Like Planets
Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.Abstract Due to the lack of a significant planetary magnetic field, the upper atmospheres of Venus‐like planets interact directly with the stellar wind. Therefore, thermal atomic oxygen in the thermosphere and hot oxygen in the corona produced by non‐thermal processes in the upper atmosphere act as a source of ion pickup loss.
T. Nishioka +6 more
wiley +1 more source
Terrestrial Analogs to Titan for Geophysical Research
Reviews of Geophysics, Volume 64, Issue 2, June 2026.Abstract Saturn's moon Titan exhibits remarkable parallels to the Earth in many geophysical and geological processes not found elsewhere in the solar system at the present day. These include a nitrogen atmosphere with a condensible gas—methane—replacing the Earth's water, leading to an active meteorology with rainfall and surface manifestations ...
Conor A. Nixon +21 more
wiley +1 more source
Mercury's sodium exosphere [PDF]
, 2016 In this dissertation I examine the properties and origins of the most energetic component of Mercury's atmosphere and how it couples to the planet's magnetosphere and space environment.
Schmidt, Carl
core
Frontiers in Astronomy and Space SciencesStereoscopic remote sensing observations of terrestrial far ultraviolet (Lyman-α at 121.6 nm) emissions at solar minimum have been used to retrieve the time-dependent response of the exospheric 3-D neutral hydrogen (H) density at radial distances of 3–6 ...
Jochen H. Zoennchen +2 more
doaj +1 more source