Results 1 to 10 of about 135,313 (308)

Ryugu’s observed volatile loss did not arise from impact heating alone

Communications Earth & Environment, 2021
The loss of volatile material from asteroid Ryugu was not caused solely by heating from hypervelocity impacts as previously believed, suggest impact experiments conducted at speeds comparable to those expected in the main asteroid ...
Kosuke Kurosawa, Ryota Moriwaki, Hikaru Yabuta, Ko Ishibashi, Goro Komatsu, Takafumi Matsui   +5 more
doaj   +1 more source

Highlight Advances in Planetary Physics in the Solar System: In Situ Detection Over the Past 20 Years

Space: Science & Technology, 2023
Planetary science is the science of studying planets, moons, and planetary systems. The scale of the research objects ranges from small meteoroids to large gas giant planets, and the research purpose is to determine their composition, dynamics, formation,
Yixin Sun, Jiutong Zhao, Chuanpeng Hou, Weixin Jiao   +3 more
doaj   +1 more source

Insights into the formation and evolution of extraterrestrial amino acids from the asteroid Ryugu

Nature Communications, 2023
Amino acid concentrations from 2 particles returned from different touchdown sites on the surface of Ryugu are reported. Differences in chemistry suggest different levels of aqueous alteration are recorded at the 2 sampled locations.
Christian Potiszil, Tsutomu Ota, Masahiro Yamanaka, Chie Sakaguchi, Katsura Kobayashi, Ryoji Tanaka, Tak Kunihiro, Hiroshi Kitagawa, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Tomohiro Usui, Sei-ichiro Watanabe, Toru Yada, Kasumi Yogata, Makoto Yoshikawa, Eizo Nakamura   +23 more
doaj   +1 more source

The guiding role of national demand in the first level discipline construction of planetary science

地球与行星物理论评, 2021
Since the beginning of the 21st century, deep space exploration has become an important national strategy. Five lunar exploration missions and the first Mars exploration mission have been successful.
Yong Wei
doaj   +1 more source

LunaR: Overview of a versatile Raman spectrometer for lunar exploration

Frontiers in Astronomy and Space Sciences, 2022
The LunaR concept study investigated the scientific value, feasibility, and deployment options for a Raman spectrometer on future lunar landed missions.
E. A. Cloutis, C. Caudill, E. A. Lalla, E. A. Lalla, J. Newman, M. Daly, E. Lymer, J. Freemantle, R. Kruzelecky, D. Applin, H. Chen, S. Connell, D. Fernandes, F. Giusto, J. Hawke, J. Lamamry, P. Murzionak, A. Parkinson, Q.-Y. Peng, N. Turenne, Z. U. Wolf   +20 more
doaj   +1 more source

Converting along-track photons into a point-region quadtree to assist with ICESat-2-based canopy cover and ground photon detection

International Journal of Applied Earth Observations and Geoinformation, 2022
The advanced laser altimetry satellite—the Ice, Cloud, and land Elevation Satellite-2 (ICESat-2)11 ICESat-2: Ice, Cloud, and land Elevation Satellite-2.—is a potentially feasible, rapid and effective tool for monitoring carbon cycle and carbon storage to
Huan Xie, Yuan Sun, Qi Xu, Binbin Li, Yalei Guo, Xiaoshuai Liu, Peiqi Huang, Xiaohua Tong   +7 more
doaj   +1 more source

AUTO-ADAPTIVE MULTI-LEVEL SEAFLOOR RECOGNITION AND LAND SEA CLASSIFICATION (AMSRLC) IN REEF-ISLAND ZONES USING ICESAT-2 LASER ALTIMETRY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
The world’s first photon-counting laser altimetry satellite, the Ice, Cloud and land Elevation Satellite-2 (ICESat-2), which was launched in 2018, has proven to have a certain bathymetric capability, which provides a new means for the surveying of island
Q. Xu, H. Xie, H. Xie, Y. Sun, X. Liu, Y. Guo, P. Huang, B. Li, X. Tong   +8 more
doaj   +1 more source

Using Laser Altimetry to Finely Map the Permanently Shadowed Regions of the Lunar South Pole Using an Iterative Self-Constrained Adjustment Strategy

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Laser altimeters are capable of achieving fine mapping of the permanently shadowed regions (PSRs) of the Moon, which can provide fundamental topographic data for planetary missions.
Huan Xie, Xiaoshuai Liu, Yusheng Xu, Zhen Ye, Shijie Liu, Xin Li, Binbin Li, Qi Xu, Yalei Guo, Xiaohua Tong   +9 more
doaj   +1 more source

Design of Mobility System for Ground Model of Planetary Exploration Rover [PDF]

Journal of Astronomy and Space Sciences, 2012
In recent years, a number of missions have been planned and conducted worldwide on the planets such as Mars, which involves the unmanned robotic exploration with the use of rover.
Younkyu Kim, Wesub Eom, Joo-Hee Lee, Eun-Sup Sim   +3 more
doaj   +1 more source

Small reactor power systems for manned planetary surface bases [PDF]

, 1987
A preliminary feasibility study of the potential application of small nuclear reactor space power systems to manned planetary surface base missions was conducted. The purpose of the study was to identify and assess the technology, performance, and safety
Bloomfield, Harvey S.
core   +2 more sources