Results 1 to 10 of about 736,131 (304)

Meteoric Metal Chemistry in the Martian Atmosphere. [PDF]

J Geophys Res Planets, 2018
AbstractRecent measurements by the Imaging Ultraviolet Spectrograph (IUVS) instrument on NASA's Mars Atmosphere and Volatile EvolutioN mission show that a persistent layer of Mg+ ions occurs around 90 km in the Martian atmosphere but that neutral Mg atoms are not detectable.
Plane JMC, Carrillo-Sanchez JD, Mangan TP, Crismani MMJ, Schneider NM, Määttänen A.   +5 more
europepmc   +8 more sources

Clouds in the Martian Atmosphere [PDF]

Oxford Research Encyclopedia of Planetary Science, 2018
Although resembling an extremely dry desert, planet Mars hosts clouds in its atmosphere. Every day somewhere on the planet a part of the tiny amount of water vapor held by the atmosphere can condense as ice crystals to form mainly cirrus-type clouds. The existence of water ice clouds has been known for a long time and they have been studied for decades,
Anni Määttänen, Franck Montmessin
semanticscholar   +6 more sources

Bow shock oscillations of Mars under weakly disturbed solar wind conditions [PDF]

Nature Communications
Bow shock, where the solar wind first encounters the Martian environment, reflects the complex interplay between the solar wind and Martian upper atmosphere and crustal fields.
Long Cheng, Yuming Wang, Yingjuan Ma, Robert Lillis, Jasper Halekas, Benoit Langlais, Tielong Zhang, Aibing Zhang, Guoqiang Wang, Sudong Xiao, Zhuxuan Zou, Yutian Chi, Xinjun Hao, Yiren Li, Zonghao Pan, Kai Liu   +15 more
doaj   +2 more sources

Impact sculpting of the early martian atmosphere. [PDF]

Sci Adv
Intense bombardment of solar system planets in the immediate aftermath of protoplanetary disk dissipation has played a key role in their atmospheric evolution. During this epoch, energetic collisions will have removed substantial masses of gas from rocky planet atmospheres.
Shorttle O, Saeidfirozeh H, Rimmer PB, Laitl V, Kubelík P, Petera L, Ferus M.   +6 more
europepmc   +7 more sources

The value of returning a sample of the Martian atmosphere. [PDF]

Proc Natl Acad Sci U S A
The elemental and isotopic abundances of major species in the Martian atmosphere have been determined, but analyses often lack sufficient precision, and those of minor and trace species are frequently not well known. Many important questions about the evolution and current state of Mars require the kind of knowledge that can be gained from analysis of ...
Swindle TD, Pack A, Schwenzer SP, Young ED.   +3 more
europepmc   +4 more sources

Discovery of a wind-driven diamagnetic current system in the Martian magnetosphere [PDF]

Scientific Reports
Magnetic fields around Mars shape the pathways of energy input into, and ion escape from, the Martian atmosphere, thereby potentially affecting the atmospheric evolution of Mars.
Yuki Harada, Robert J. Lillis, Matthew O. Fillingim, Shun Imajo, Takuto Minami, Yingjuan Ma, Jacob R. Gruesbeck, Gina A. DiBraccio, Jared R. Espley   +8 more
doaj   +2 more sources

Stable carbon isotope evolution of formaldehyde on early Mars [PDF]

Scientific Reports
Organic matter in the Martian sediments may provide a key to understanding the prebiotic chemistry and habitability of early Mars. The Curiosity rover has measured highly variable and 13C-depleted carbon isotopic values in early Martian organic matter ...
Shungo Koyama, Tatsuya Yoshida, Yoshihiro Furukawa, Naoki Terada, Yuichiro Ueno, Yuki Nakamura, Arihiro Kamada, Takeshi Kuroda, Ann Carine Vandaele   +8 more
doaj   +2 more sources

Properties and models of the Martian bow shock

地球与行星物理论评, 2021
Mars does not have a global magnetic field of the internal origin, thus, the solar wind plasma can interact directly with the upper atmosphere and the ionosphere and be shocked with the mass-loading and magnetic pileup processes.
Yifan Li, Jiding Wen, Yuan Pan, Haibo Lin, Jianpeng Guo   +4 more
doaj   +1 more source

Methodology of estimation the parameters permissible values of the aerodynamic and inertial asymmetry of the martian probe

Космические аппараты и технологии, 2023
A technique for estimating small permissible values of the parameters of the aerodynamic and inertial asymmetry of an unguided space probe in the rarefied layers of the Martian atmosphere is considered.
I. Bakry
doaj   +1 more source

Stability of the Martian Atmosphere [PDF]

Science, 1972
A detailed chemical dynamic model is presented for a moist martian atmosphere. Recombination of carbon dioxide is catalyzed by trace amounts of water. The abundances of carbon monoxide and molecular oxygen should vary in response to changes in atmospheric water and atmospheric mixing.
M B, McElroy, T M, Donahue
openaire   +2 more sources