Results 21 to 30 of about 112,007 (358)

Study on Effect of Aerodynamic Configuration on Aerodynamic Performance of Mars Ascent Vehicles

Space: Science & Technology, 2022
The Mars surface take-off and ascent technology is one of the key technologies for realizing the Mars sample return mission. Different from that on the moon, the gravity acceleration on the surface of Mars is 3.71 m/s2, so that the gravity loss is larger
Qi Li, Wu Yuan, Rui Zhao, Haogong Wei
doaj   +1 more source

A three-dimensional atmospheric dispersion model for Mars

Progress in Earth and Planetary Science, 2021
Atmospheric local-to-regional dispersion models are widely used on Earth to predict and study the effects of chemical species emitted into the atmosphere and to contextualize sparse data acquired at particular locations and/or times. However, to date, no
D. Viúdez-Moreiras
doaj   +1 more source

Optimal Technology Allocation of in the Life Support Subsystem with Maximum Reliability [PDF]

فناوری در مهندسی هوافضا, 2023
The atmosphere of the Red Planet or Mars contains 95% of carbon dioxide, 3% of nitrogen, 1.6% of argon and only a small amount of oxygen, and in terms of concentration is about one percent of the planet's atmosphere, which makes it virtually impossible ...
Milad Mahmoudi, A. B. Basohbate Novinzadeh, Farshad Pazooki   +2 more
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The atmosphere of Mars as observed by InSight [PDF]

Nature Geoscience, 2020
The atmosphere of Mars is thin, although rich in dust aerosols, and covers a dry surface. As such, Mars provides an opportunity to expand our knowledge of atmospheres beyond that attainable from the atmosphere of the Earth. The InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) lander is measuring Mars’s atmosphere ...
Banfield, Don, Spiga, Aymeric, Newman, Claire, Forget, François, Lemmon, Mark, Lorenz, Ralph, Murdoch, Naomi, Viudez-Moreiras, Daniel, Pla-Garcia, Jorge, Garcia, Raphaël, Lognonné, Philippe, Karatekin, Özgür, Perrin, Clement, Martire, Léo, Teanby, Nicholas, Hove, Bart Van, Maki, Justin, Kenda, Balthasar, Mueller, Nils, Rodriguez, Sébastien, Kawamura, Taichi, Mcclean, John, Stott, Alexander, Charalambous, Constantinos, Millour, Ehouarn, Johnson, Catherine, Mittelholz, Anna, Määttänen, Anni, Lewis, Stephen, Clinton, John, Stähler, Simon, Ceylan, Savas, Giardini, Domenico, Warren, Tristram, Pike, William, Daubar, Ingrid, Golombek, Matthew, Rolland, Lucie, Widmer-Schnidrig, Rudolf, Mimoun, David, Beucler, Éric, Jacob, Alice, Lucas, Antoine, Baker, Mariah, Ansan, V., Hurst, Kenneth, Mora-Sotomayor, Luis, Navarro, Sara, Torres, Josefina, Lepinette, Alain, Molina, Antonio, Marin-Jimenez, Mercedes, Gómez-Elvira, Javier, Peinado, Veronica, Rodriguez-Manfredi, Jose-Antonio, Carcich, Brian, Sackett, Stephen, Russell, Christopher, Spohn, Tilman, Smrekar, Suzanne, Banerdt, W. Bruce   +60 more
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Structural and Compositional Changes in the Upper Atmosphere Related to the PEDE‐2018 Dust Event on Mars as Observed by MAVEN NGIMS

Geophysical Research Letters, 2020
The onset of the planet encircling dust event (PEDE‐2018) started around 1 June 2018 as observed by Mars Reconnaissance Orbiter/Mars Color Imager, peaking around 7–10 July and persisting through mid‐October 2018.
M. K. Elrod, S. W. Bougher, K. Roeten, R. Sharrar, J. Murphy   +4 more
doaj   +1 more source

Detection of Martian dust storms using mask regional convolutional neural networks

Progress in Earth and Planetary Science, 2022
Martian dust plays a crucial role in the meteorology and climate of the Martian atmosphere. It heats the atmosphere, enhances the atmospheric general circulation, and affects spacecraft instruments and operations.
Rasha Alshehhi, Claus Gebhardt
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Anaerobic Photosynthesizers and their Potential to Create a Biosphere on the Surface of the Red Planet [PDF]

فناوری در مهندسی هوافضا, 2023
The atmosphere of the Red Planet or Mars contains 95% of carbon dioxide, 3% of nitrogen, 1.6% of argon and only a small amount of oxygen, and in terms of concentration is about one percent of the planet's atmosphere, which makes it virtually impossible ...
Fateme Mousavi
doaj   +1 more source

Brief communication: Lower-bound estimates for residence time of energy in the atmospheres of Venus, Mars and Titan [PDF]

Nonlinear Processes in Geophysics, 2021
The residence time of energy in a planetary atmosphere, τ, which was recently introduced and computed for the Earth's atmosphere (Osácar et al., 2020), is here extended to the atmospheres of Venus, Mars and Titan.
J. Pelegrina, C. Osácar, A. Fernández-Pacheco   +2 more
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On the extensive atmosphere of Mars [PDF]

Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London
In this paper the author gives an account of a further observation which corroborates the conclusion he had stated in a former communication “On the extensive atmosphere of Mars,” namely, that no indication now existed of any atmosphere being attached to that planet.
James South
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Influence of Magnetic Fields on Precipitating Solar Wind Hydrogen at Mars

Geophysical Research Letters, 2022
Solar wind protons can interact directly with the hydrogen corona of Mars through charge exchange, resulting in energetic neutral atoms (ENAs) able to penetrate deep into the upper atmosphere of Mars.
Sarah Henderson, Jasper Halekas, Zach Girazian, Jared Espley, Meredith Elrod   +4 more
doaj   +1 more source