Results 11 to 20 of about 10,100 (298)

Geology of the Derain quadrangle (H10), Mercury

Journal of Maps, 2023
We present the results of geological mapping of Mercury’s Derain (H10) quadrangle (0°-72°E and 22.5°N-22.5°S) using data from the MESSENGER spacecraft. The map is presented on a scale of 1:3,000,000, for which linework was drawn at 1:300,000.
Christopher C. Malliband, David A. Rothery, Matthew R. Balme, Susan J. Conway, David L. Pegg, Jack Wright   +5 more
doaj   +1 more source

Human crew-related aspects for astrobiology research [PDF]

, 2011
Several space agencies and exploration stakeholders have a strong interest in obtaining information on technical and human aspects to prepare for future extra-terrestrial planetary exploration.
Foing, B.H., Vladimir Pletser, Thiel, C.S., Cora S. Thiel, Pletser, V., Bernard Foing   +5 more
core   +1 more source

Formation mechanisms of ringwoodite: clues from the Martian meteorite Northwest Africa 8705

Earth, Planets and Space, 2021
Ringwoodite and wadsleyite are the high-pressure polymorphs of olivine, which are common in shocked meteorites. They are the major constituent minerals in the terrestrial mantle.
Ting Zhang, Sen Hu, Nian Wang, Yangting Lin, Lixin Gu, Xu Tang, Xinyu Zou, Mingming Zhang   +7 more
doaj   +1 more source

Global Mapping of Fragmented Rocks on the Moon with a Neural Network: Implications for the Failure Mode of Rocks on Airless Surfaces

The Planetary Science Journal, 2023
Failure modes of lunar boulders depend both on rheology and the erosion agents acting in the lunar surface environment. Here, we address the failure modes of lunar boulders and their variations at a quasi-global scale (60°N to S).
Ottaviano Rüsch, Valentin T. Bickel
doaj   +1 more source

Sulfur Isotopic Fractionation of the Youngest Chang'e‐5 Basalts: Constraints on the Magma Degassing and Geochemical Features of the Mantle Source

Geophysical Research Letters, 2022
The unusually prolonged volcanism at the Chang'e‐5 (CE‐5) landing site remains a mystery. To constrain the geochemical features of the CE‐5 mantle source, we performed in situ sulfur isotope analysis on sulfides of the CE‐5 basalts.
Xiaoying Liu, Jialong Hao, Rui‐Ying Li, Yuyang He, Heng‐Ci Tian, Sen Hu, Jing Li, Lixin Gu, Wei Yang, Yangting Lin   +9 more
doaj   +1 more source

A Geologic Map of Vesta Produced Using a Hybrid Method for Incorporating Spectroscopic and Morphologic Data

The Planetary Science Journal, 2023
We have constructed a global geologic map of the minor planet Vesta at 1:300,000-scale using Dawn spacecraft imaging, spectroscopic, topographic, and elemental data.
R. Aileen Yingst, Scott C. Mest, W. Brent Garry, David A. Williams, Daniel C. Berman, Tracy K. P. Gregg   +5 more
doaj   +1 more source

Responding trends of ionospheric F2-layer to weaker geomagnetic activities

Journal of Space Weather and Space Climate, 2022
Geomagnetic activities frequently occur in varying degrees. Strong geomagnetic activities, which have been widely investigated, occur occasionally; they can cause distinguishable and significant disturbances in the ionosphere.
Chen Yiding, Liu Libo, Le Huijun, Zhang Hui, Zhang Ruilong   +4 more
doaj   +1 more source

Geology of the Alpha Regio (V-32) Quadrangle, Venus

Journal of Maps, 2019
We present a 1:2,500,000 geological map of the Alpha Regio (V-32) quadrangle, Venus. The V-32 quadrangle extends from 0° to 25 S, 0°to 30° E with an area of approximately 7,600,000 km2. Geological mapping was conducted using full resolution (maximum 75 m/
Erin M. Bethell, Richard E. Ernst, Claire Samson   +2 more
doaj   +1 more source

Solar Tide‐like Signatures in the Ionospheric Total Electron Content During the 2018 Sudden Stratospheric Warming Event

Space Weather, 2022
Atmospheric waves play an important role in the vertical coupling of atmosphere and ionosphere. Recent studies revealed that the mesospheric wave activities associated with sudden stratospheric warming events (SSWs) are more complicated than previously ...
Han Ma, Maosheng He, Libo Liu, Wenbo Li, Yuyan Yang, Ruilong Zhang, Yiding Chen, Huijun Le, Hui Zhang, Guozhu Li   +9 more
doaj   +1 more source

Concurrent effects of Martian topography on the thermosphere and ionosphere at high northern latitudes

Earth, Planets and Space, 2022
Martian topography modulated non-migrating tides play important roles in the upper atmosphere and thus in the ionosphere through their coupling, especially in their longitude variations. In this study, the neutral scale height (H n ) and ionospheric peak
Yiding Chen, Libo Liu, Huijun Le, Hui Zhang, Ruilong Zhang   +4 more
doaj   +1 more source