Results 51 to 60 of about 1,546 (142)

Report on the Twelfth United Nations/European Space Agency Workshop on Basic Space Science

, 2006
Pursuant to recommendations of the United Nations Conference on the Exploration and Peaceful Uses of Outer Space (UNISPACE III) and deliberations of the United Nations Committee on the Peaceful Uses of Outer Space (UNCOPUOS), annual UN/European Space ...
Haubold, H. J., Wamsteker, W.
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Lunar Degree-2 Tidal Love Number Determination Based on Combination of Four-way Radiometric Tracking and LLR Data

The Astronomical Journal
Lunar tidal Love numbers ( ${k}_{2}$ , ${h}_{2}$ , and ${l}_{2}$ ), critical for understanding lunar interior structures, are traditionally derived from methods such as lunar spacecraft radiometric tracking, Lunar Laser Ranging (LLR), and laser altimetry.
Chongyang Wang, Jianguo Yan, Shangbiao Sun, Denggao Qiu, Jean-Pierre Barriot   +4 more
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Bi-directional reflectance, polarization, and spectroscopic measurements of the Chang'e-5 regolith sample

Astronomy & Astrophysics
Context. Optical measurement is a powerful tool for retrieving the regolith physical properties of the lunar surface. Aims. It has been a long-standing question in planetary remote sensing whether laboratory measurements are consistent with remote ...
Jiang Te, Zhang Hao, Ma Pei, Zhuang Yan, Hu Xiaoyi, Zhu Meng-Hua, Shkuratov Yuriy G., Lucey Paul G., Li Chunlai, Zhou Qin, Zuo Wei, Britt Daniel   +11 more
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LUVMI: an innovative payload for the sampling of volatiles at the Lunar poles [PDF]

, 2017
The ISECG identifies one of the first exploration steps as in situ investigations of the moon or asteroids. Europe is developing payload concepts for drilling and sample analysis, a contribution to a 250kg rover as well as for sample return.
Aked, Richard, Barber, S. J., Biswas, Janos, Ceglia, Enrico, Dobrea, Diana, Evagora, Anthony, Gancet, Jeremi, Govindaraj, Shashank, Kullack, Karsten, Madakashira, Hemanth, Murray, Neil, Philipp, Reiss, Pitcher, Craig, Reganaz, Mattia, Richter, Lutz, Rushton, Joseph, Salini, Joseph, Sheridan, Simon, Surdo, Leonardo, Urbina, Diego   +19 more
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Asteroid Models from Multiple Data Sources

, 2015
In the past decade, hundreds of asteroid shape models have been derived using the lightcurve inversion method. At the same time, a new framework of 3-D shape modeling based on the combined analysis of widely different data sources such as optical ...
Carry, B., Delbo, M., Durech, J., Kaasalainen, M., Viikinkoski, M.   +4 more
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Planetary Defence Activities Beyond NASA and ESA [PDF]

The collision of a significant asteroid or comet with Earth represents a singular natural disaster for a myriad of reasons, including: its extraterrestrial origin; the fact that it is perhaps the only natural disaster that is preventable in many cases ...
Barbee, Brent W.
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Ultraviolet astronomy with small space telescopes [PDF]

, 2017
After describing the present situation with astronomy in the ultraviolet (UV), reviewing a few past and proposed future missions, we present options to develop space missions that have been realized for modest costs.
Balabanov, V., Behar, E., Brosch, Noah, Gómez de Castro, Ana Inés, Merty, J., Ribak, E. N.   +5 more
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High frequency Lunar Penetrating Radar quality control, editing and processing of Chang’E-4 lunar mission

Scientific Data
Chinese lunar landing mission Chang’E-4 reached the far side of the Moon in January 2019 and has been providing unprecedented Lunar Penetrating Radar data able to explore the lunar subsurface down to more than 40 m (with its more resolutive high ...
G. Roncoroni, E. Forte, I. Santin, A. Černok, A. Rajšić, A. Frigeri, M. Pipan   +6 more
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A Heuristic Strategy to Compute Ensemble of Trajectories for 3D Low Cost Earth-Moon Transfers [PDF]

, 2016
The problem of finding optimal trajectories is essential for modern space mission design. When considering multibody gravitational dynamics and exploiting both low-thrust and high-thrust and alternative forms of propulsion such as solar sailing, sets ...
Ceriotti, Matteo, de Sousa-Silva, Priscilla A., McInnes, Colin R., Terra, Maisa O.   +3 more
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Photometric Characteristics of Lunar Soils: Results from Spectral Analysis of Chang’E-5 In Situ Data Using Legendre Phase Function

Remote Sensing
China’s Chang’E-5 (CE-5) mission has successfully landed in the Northern Oceanus Procellarum of the Moon. Lunar mineralogical spectrometer (LMS), as one of the important payloads onboard CE-5 Lander–Ascender Combination, aims to study the physical and ...
Meizhu Wang, Dawei Liu, Rui Xu, Zhiping He   +3 more
doaj   +1 more source