Results 21 to 30 of about 1,196,768 (246)

Data Pre-Processing and Signal Analysis of Tianwen-1 Rover Penetrating Radar

open access: yesRemote Sensing, 2023
The Rover-mounted Subsurface Penetrating Radar (RoSPR) is one of the scientific payloads onboard China’s first independent Mars exploration mission, Tianwen-1.
Shuning Liu   +8 more
doaj   +1 more source

Color Differences on the Lunar Surface [PDF]

open access: yes, 1968
Both a detailed literature survey and a new observational study were performed to determine and extend the knowledge of spectral reflectivity differences (color differences) on the lunar surface in the extended visible wavelength region.
McCord, Thomas Bard
core   +1 more source

Peak-ring structure and kinematics from a multi-disciplinary study of the Schrödinger impact basin

open access: yesNature Communications, 2016
Impact basins on the Moon are considered as the best landing sites for the recovery of information about the lunar interior. To inform future lunar missions, Kringet al.
David A. Kring   +4 more
doaj   +1 more source

Mission analysis of lunar scientific research station based on MBSE

open access: yesHangkong gongcheng jinzhan, 2023
After the completion of the three steps of "circling back", the lunar exploration has changed from the short-term single point exploration to the long-term exploration of lunar scientific research stations with the con-struction of lunar surface ...
GUAN Feng   +6 more
doaj   +1 more source

Research Status of Additive Manufacturing Lunar in-situ Forming Technology

open access: yesKuangchan zonghe liyong, 2023
This is an essay in the field of ceramics and composites. For decades, space exploration has been a hot topic. With the launch of Chang'e 5, China officially opened the first extraterrestrial celestial body sampling return journey.
Lingzhi Wu   +6 more
doaj   +1 more source

Recent progress in lunar dust migration and biological toxicity research

open access: yes地球与行星物理论评, 2021
Lunar dust is easy to transport both vertically and horizontally, which affects the lunar surface material distribution, and the dusty plasma environment near the lunar surface.
Xiaoping Zhang   +4 more
doaj   +1 more source

Descent trajectory reconstruction and landing site positioning of Chang’E-4 on the lunar farside

open access: yesNature Communications, 2019
The Chang’E-4 mission in January 2019 had the major challenge to land on the lunar far side without traditional radiometric techniques due to the missing line-of-sight.
Jianjun Liu   +16 more
doaj   +1 more source

Analysis on Delta-Vs to Maintain Extremely Low Altitude on the Moon and Its Application to CubeSat Mission

open access: yesJournal of Astronomy and Space Sciences, 2019
This paper analyzes delta-Vs to maintain an extremely low altitude on the Moon and investigates the possibilities of performing a CubeSat mission. To formulate the station-keeping (SK) problem at an extremely low altitude, current work has utilized real ...
Young-Joo Song   +2 more
doaj   +1 more source

Improvement of Lunar Surface Dating Accuracy Utilizing Crater Degradation Model: A Case Study of the Chang’e-5 Sampling Area

open access: yesRemote Sensing, 2023
Taking the Chang’e-5 (CE-5) sampling area as an example, this study carried out an investigation on improving the crater size-frequency distribution (CSFD) dating accuracy of lunar surface geologic units based on the crater degradation model.
Feiyue Zhao, Wei Zuo, Chunlai Li
doaj   +1 more source

Towards an integrated scientific and social case for human space exploration [PDF]

open access: yes, 2004
I will argue that an ambitious programme of human space exploration, involving a return to the Moon, and eventually human missions to Mars, will add greatly to human knowledge. Gathering such knowledge is the primary aim of science, but science's compart-
Crawford, Ian
core   +1 more source

Home - About - Disclaimer - Privacy