Results 131 to 140 of about 25,918 (240)

ExoMars entry, descent and landing science [PDF]

open access: yes, 2011
The entry, descent and landing of ExoMars offer a rare (once-per-mission) opportunity to perform in situ investigation of the martian environment over a wide altitude range. Entry, Descent and Landing System (EDLS) measurements can provide essential data
Aboudan, A.   +19 more
core  

Effects of Martian Dust Storms on Ionospheric Peak Altitudes

open access: yesThe Astrophysical Journal
The effects of Martian dust storms on the atmosphere and ionosphere is one of the hot topics in Mars research. This paper reports on the effects of a local dust storm on the ionospheric peak altitude based on electron density profile observations from ...
Yu Lou   +3 more
doaj   +1 more source

Stable carbon isotope evolution of formaldehyde on early Mars

open access: yesScientific 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   +8 more
doaj   +1 more source

Mars Lander/Rover vehicle development: An advanced space design project for USRA and NASA/OAST [PDF]

open access: yes
A design is proposed for a Mars Lander/Rover (MLR) for use in gathering needed environmental and surface information. The design focus will be upon a Mars Lander/Rover that will leave an orbit around Mars, reenter and soft land on the Martian surface ...

core   +1 more source

A First Look at Carbon and Oxygen Stable Isotope Measurements of Martian Atmospheric C02 by the Phoenix Lander [PDF]

open access: yes, 2009
Precise stable isotope measurements of the CO2 in the martian atmosphere have the potential to provide important constraints for our understanding of the history of volatiles, the carbon cycle, current atmospheric processes, and the degree of water/rock ...
Boynton, W.V.   +4 more
core   +1 more source

Carbon reservoirs on Mars: Constraints from Martian meteorites [PDF]

open access: yes, 2003
We have measured the abundance and stable isotopic composition of magmatic carbon extracted from a suite of shergottites. The results confirm previous findings that primordial carbon on Mars is isotopically lighter than that of the ...
Grady, Monica, Wright, Ian
core  

Martian Surface and Atmosphere Workshop

open access: yesEos, Transactions American Geophysical Union, 1992
The NASA‐sponsored Martian Surface and Atmosphere Through Time Study Project convened its first major meeting at the University of Colorado in Boulder, September 23–25, 1991. The workshop, co‐sponsored by the Lunar and Planetary Institute (LPI) and the Laboratory for Atmospheric and Space Physics at the University of Colorado, brought together an ...
openaire   +1 more source

Dual-Wavelength Interferometric Detection Technology for Wind and Temperature Fields in the Martian Middle and Upper Atmosphere Based on LCTF

open access: yesRemote Sensing
A dual-wavelength spaceborne Martian polarized wind imaging Michelson interferometer based on liquid crystal tunable filters (LCTF-MPWIMI) has been proposed for the remote sensing detection of dynamic parameters such as wind speed and temperature in the ...
Yanqiang Wang   +6 more
doaj   +1 more source

Free convection in the Martian atmosphere [PDF]

open access: yes
Researchers investigated the free convective regime for the Martian atmospheric boundary layer (ABL). Researchers generalized Schumann's model describing horizontal fluctuations and mean vertical gradients occurring during free convection to include ...
Clow, G. D., Haberle, R. M.
core   +1 more source

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