Results 51 to 60 of about 80,914 (264)

Microbial growth in actual martian regolith in the form of Mars meteorite EETA79001

open access: yesCommunications Earth & Environment, 2023
Studies to understand the growth of organisms on Mars are hampered by the use of simulants to duplicate martian mineralogy and chemistry. Even though such materials are improving, no terrestrial simulant can replace a real martian sample.
Neveda Naz   +3 more
doaj   +1 more source

The trapped heavy noble gases in recently found Martian meteorites [PDF]

open access: yes, 2002
The composition of the trapped Ar, Kr, and Xe in the Martian meteorites Los Angeles, Say Al Uhaymir 005/008, and 094 is discussed and found to be consistent with a mixture of Martian mantle and atmosphere noble gases and terrestrial ...
Busemann, H., Eugster, O.
core  

What Is Space Bioethics?

open access: yesBioethics, EarlyView.
ABSTRACT Classical bioethics examines moral issues in terrestrial medicine and the life sciences. According to Konrad Szocik, space bioethics merely relocates those questions to harsher environments. We argue that this view is incomplete: space bioethics is a genuinely original domain.
Maurizio Balistreri
wiley   +1 more source

Thermospheric density responses to Martian dust storm in autumn based on MAVEN data

open access: yesGeodesy and Geodynamics, 2022
The unique seasonal surface dust storms on Mars have a significant impact on the Martian atmosphere. However, due to the lack of observations, semi-empirical models are difficult to simulate the density changes in the thermosphere with the existence of ...
Peng Han   +3 more
doaj   +1 more source

Dune formation on the present Mars

open access: yes, 2007
We apply a model for sand dunes to calculate formation of dunes on Mars under the present Martian atmospheric conditions. We find that different dune shapes as those imaged by Mars Global Surveyor could have been formed by the action of sand-moving winds
Eric J. R. Parteli   +17 more
core   +1 more source

Constructing citizenship and indigeneity in Jordan: The politics of Bedouin rights and identities in cultural heritage sites

open access: yesThe Geographical Journal, EarlyView.
Short Abstract This paper explores the relationships between Bedouin rights, citizenship and indigeneity in cultural heritage sites in Jordan. Through interviews and ethnographic fieldwork with Bedouin communities, we argue that a more critical engagement with indigeneity is necessary in Jordan.
Taraf Abu Hamdan, Olivia Mason
wiley   +1 more source

A Mars Environment Chamber Coupled with Multiple In Situ Spectral Sensors for Mars Exploration

open access: yesSensors, 2021
Laboratory simulation is the only feasible way to achieve Martian environmental conditions on Earth, establishing a key link between the laboratory and Mars exploration. The mineral phases of some Martian surface materials (especially hydrated minerals),
Zhongchen Wu   +7 more
doaj   +1 more source

Towards a global model of the martian atmosphere [PDF]

open access: yes, 2003
In an effort to continuously improve the capabilities of the Martian atmospheric predictions at LMD, the GCM has been extended into thermospheric heights thus creating the first model to self-consistently couple the lower and upper regions of the ...
Angelats i Coll, M.   +7 more
core  

X‐ray computed tomography study of terrestrial analog cores in preparation for Mars sample return

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Mars Sample Return (MSR) is expected to transform planetary science by providing unprecedented access to pristine Martian material. Initial characterization in the sample receiving facility (SRF) will rely on nondestructive techniques such as X‐ray computed tomography (XCT) to document the condition, distribution, and internal features of ...
Sophie Benaroya   +3 more
wiley   +1 more source

Women in space: A review of known physiological adaptations and health perspectives

open access: yesExperimental Physiology, EarlyView.
Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford   +4 more
wiley   +1 more source

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