Results 61 to 70 of about 5,954,141 (263)
Geosciences, 2018 We briefly present preliminary results of our study of the radioresistant bacteria in a low temperature and pressure and high-radiation environment and hypothesize the ability of microorganisms to survive extraterrestrial high-radiation environments ...
Anatoly Pavlov +5 more
doaj +1 more source
Powered Landing Control of Reusable Rockets Based on Softmax Double DDPG
Aerospace, 2023 Multi-stage launch vehicles are currently the primary tool for humans to reach extraterrestrial space. The technology of recovering and reusing rockets can effectively shorten rocket launch cycles and reduce space launch costs.
Wenting Li +4 more
doaj +1 more source
The Space Experiment of the Exo-ecosystem [PDF]
arXiv, 2023 The experiment of exo-ecosystem and the exploration of extraterrestrial habitability aims to explore the adaptation of terrestrial life in space conditions for the manned space program and the future interstellar migration, which shows great scientific significance and public interests. By our knowledge the early life on Earth, archaea and extremophile
arxiv
Two types of mirror mode waves in the Kronian magnetosheath
Earth and Planetary Physics, 2023 A mirror mode wave is a fundamental magnetic structure in the planetary space environment that is persistently compressed by solar wind, especially in the magnetosheath.
XinYa Duanmu +3 more
doaj +1 more source
Laboratory Studies of Methane and Its Relationship to Prebiotic Chemistry [PDF]
ASTROBIOLOGY, Volume 17, Number 8, 2017, 2018 In order to examine how the terrestrial life emerged, a number of laboratory experiments have been conducted since the 1950s. Methane has been one of the key molecules in these studies. In earlier studies, strongly reducing gas mixtures containing methane and ammonia were mainly used to simulate possible reactions in primitive Earth atmosphere, and ...
arxiv +1 more source
Learning and Autonomy for Extraterrestrial Terrain Sampling: An Experience Report from OWLAT Deployment [PDF]
arXiv, 2023 Extraterrestrial autonomous lander missions increasingly demand adaptive capabilities to handle the unpredictable and diverse nature of the terrain. This paper discusses the deployment of a Deep Meta-Learning with Controlled Deployment Gaps (CoDeGa) trained model for terrain scooping tasks in Ocean Worlds Lander Autonomy Testbed (OWLAT) at NASA Jet ...
arxiv
Evidence for the charge disproportionation of iron in extraterrestrial bridgmanite
Science Advances, 2020 We find that the charge disproportionation reaction of ferrous iron occurs in a natural high-pressure environment. Bridgmanite, MgSiO3 with perovskite structure, is considered the most abundant mineral on Earth. On the lower mantle, it contains Fe and Al
L. Bindi, S. Shim, T. Sharp, Xiande Xie
semanticscholar +1 more source
Exploring, Mapping, and Data Management Integration of Habitable Environments in Astrobiology
Frontiers in Microbiology, 2019 New approaches to blending geoscience, planetary science, microbiology-geobiology/ecology, geoinformatics and cyberinfrastructure technology disciplines in a holistic effort can be transformative to astrobiology explorations.
Marjorie A. Chan +8 more
doaj +1 more source
Martian biolith: A bioinspired regolith composite for closed-loop extraterrestrial manufacturing
PLoS ONE, 2020 Given plans to revisit the lunar surface by the late 2020s and to take a crewed mission to Mars by the late 2030s, critical technologies must mature. In missions of extended duration, in situ resource utilization is necessary to both maximize scientific ...
Shiwei Ng +2 more
semanticscholar +1 more source
Life, 2021 This work is a review of the experiments carried out in the Russian segment of the ISS (inside and outside) from 2005 to 2016 on the effect of the space flight factor on the resting stages of organisms.
Victor R. Alekseev +2 more
doaj +1 more source