Results 101 to 110 of about 6,471 (197)

Exospheric neutral density at the 10 RE subsolar point during solar maximum: estimates from XMM soft X-ray observations

Frontiers in Astronomy and Space Sciences
Highly charged ions in the solar wind undergo charge exchange with neutral atoms in the Earth’s exosphere, particularly within the magnetosheath and cusps.
Jaewoong Jung, Jaewoong Jung, Hyunju Kim Connor, Jennifer A. Carter, Dimitra Koutroumpa, Claudio Pagani   +5 more
doaj   +1 more source

Lunar base activities and the lunar environment [PDF]

The Moon is an attractive site for astronomical observatories and other facilities because of the absence of a substantial lunar atmosphere and the stability of the lunar surface.
Vondrak, Richard R.
core   +1 more source

Surface Response of Mercury’s Sulfides under Solar Wind Ion Irradiation

The Planetary Science Journal
The MESSENGER mission revealed unexpectedly high sulfur content within Mercury’s surface, deviating from the lunar regolith, which was until recently considered a good Mercury analog.
Noah Jäggi, Catherine A. Dukes
doaj   +1 more source

Volatiles and Refractories in Surface-Bounded Exospheres in the Inner Solar System. [PDF]

Space Sci Rev, 2021
Grava C, Killen RM, Benna M, Berezhnoy AA, Halekas JS, Leblanc F, Nishino MN, Plainaki C, Raines JM, Sarantos M, Teolis BD, Tucker OJ, Vervack RJ, Vorburger A.   +13 more
europepmc   +1 more source

Photoionization Loss of Mercury's Sodium Exosphere: Seasonal Observations by MESSENGER and the THEMIS Telescope. [PDF]

Geophys Res Lett, 2021
Jasinski JM, Cassidy TA, Raines JM, Milillo A, Regoli LH, Dewey R, Slavin JA, Mangano V, Murphy N.   +8 more
europepmc   +1 more source

Thermally Driven Atmospheric Escape: Transition from Diffusion-limited to Drag-off Escape

The Planetary Science Journal
We examine the transition from diffusion-limited to drag-off escape using a direct simulation Monte Carlo (DSMC) model developed to simulate planetary atmospheres, referred to as Harrah.
Jack C. Evans, Shane Robert Carberry Mogan, Robert E. Johnson, Orenthal J. Tucker   +3 more
doaj   +1 more source

Charon's refractory factory. [PDF]

Sci Adv, 2022
Raut U, Teolis BD, Kammer JA, Gimar CJ, Brody JS, Gladstone GR, Howett CJA, Protopapa S, Retherford KD.   +8 more
europepmc   +1 more source

Wind enhanced planetary escape: Collisional modifications [PDF]

The problem of thermal escape is considered in which both the effects of thermospheric winds at the exobase and collisions below the exobase are included in a Monte Carlo calculation. The collisions are included by means of a collisional relaxation layer
Curtis, S. A., Hartle, R. E.
core   +1 more source

Hydrogen-bearing vesicles in space weathered lunar calcium-phosphates. [PDF]

Commun Earth Environ, 2023
Burgess KD, Cymes BA, Stroud RM.
europepmc   +1 more source

Modeling exospheres: analytical and numerical methods with application examples

Frontiers in Astronomy and Space Sciences
Exospheres, the tenuous gas environments surrounding planets, planetary satellites, and cometary comae, play a significant role in mediating the interactions of these astronomical bodies with their surrounding space environments.
Valeriy Tenishev, Yinsi Shou, Yuni Lee, Yuni Lee, Yingjuan Ma, Michael R. Combi   +5 more
doaj   +1 more source