Results 101 to 110 of about 3,295 (219)

Comprehensive mapping of lunar surface chemistry by adding Chang'e-5 samples with deep learning. [PDF]

Nat Commun, 2023
Yang C, Zhang X, Bruzzone L, Liu B, Liu D, Ren X, Benediktsson JA, Liang Y, Yang B, Yin M, Zhao H, Guan R, Li C, Ouyang Z.   +13 more
europepmc   +1 more source

A radar-echo model for Mars [PDF]

Researchers developed a radar-echo model for Mars based on 12.6 cm continuous wave radio transmissions backscattered from the planet. The model broadly matches the variations in depolarized and polarized total radar cross sections with longitude observed
Moore, H. J., Thompson, T. W.
core   +1 more source

NASA Human Spaceflight Architecture Team Lunar Destination Activities [PDF]

, 2012
NASA's Human Spaceflight Architecture Team (HAT) Lunar Destination Team has been developing a number of "Design Reference Missions" (DRM) to inform exploration architecture development, transportation approaches, and destination elements and operations ...
Connolly, J. F., Mueller, R. P., Whitley, R. J.   +2 more
core   +1 more source

The Lunar Regolith Thickness and Stratigraphy of the Chang’E-6 Landing Site

Remote Sensing
The Chang’E-6 (CE-6) mission successfully returned 1935.3 g of lunar soil samples from the Apollo basin within the South Pole–Aitken basin. One of its scientific objectives is to investigate the subsurface structure and regolith thickness at the landing ...
Jin Li, Chengxiang Yin, Siyue Chi, Wenshuo Mao, Xiaohui Fu, Jiang Zhang   +5 more
doaj   +1 more source

Geology orbiter comparison study [PDF]

Instrument requirements of planetary geology orbiters were examined with the objective of determining the feasibility of applying standard instrument designs to a host of terrestrial targets. Within the basic discipline area of geochemistry, gamma-ray, X-
Blasius, K. R., Cutts, J. A. J., Davis, D. R., Pang, K. D., Shreve, D. C.   +4 more
core   +1 more source

A treatise on the Surveyor lunar landing dynamics and an evaluation of pertinent telemetry data returned by Surveyor I [PDF]

Dynamic behavior of Surveyor landing system and surface material during lunar ...
Garba, J., Sperling, F.
core   +1 more source

Layered subsurface in Utopia Basin of Mars revealed by Zhurong rover radar. [PDF]

Nature, 2022
Li C, Zheng Y, Wang X, Zhang J, Wang Y, Chen L, Zhang L, Zhao P, Liu Y, Lv W, Liu Y, Zhao X, Hao J, Sun W, Liu X, Jia B, Li J, Lan H, Fa W, Pan Y, Wu F.   +20 more
europepmc   +1 more source

Experimenter's data package for the descending layers rocket [PDF]

In response to a proposal from Science Applications International Corporation (SAIC), NASA Headquarters has approved a sounding rocket mission designed to study the physics of intermediate layers in the Earth's ionosphere at middle latitudes.
Buonsanto, Mike, Earle, Greg, Foster, John, Herrero, Fred, Satya-Narayana, P.   +4 more
core   +1 more source

Free convection in the Matian atmosphere [PDF]

The 'free convective' regime for the Martian atmospheric boundary layer (ABL) was investigated. This state occurs when the mean windspeed at the top of the ABL drops below some critical value U(sub c) and positive buoyant forces are present.
Clow, G. D., Haberle, R. M.
core   +1 more source

A Combined XRD/XRF Instrument for Lunar Resource Assessment [PDF]

Robotic surface missions to the Moon should be capable of measuring mineral as well as chemical abundances in regolith samples. Although much is already known about the lunar regolith, our data are far from comprehensive.
Bish, D. L., Blacic, J. D., Chipera, S. J., Vaniman, D. T.   +3 more
core   +1 more source