Results 21 to 30 of about 4,712 (268)

Analyzing LDEX's Current Measurements in Lunar Orbit

open access: yesThe Planetary Science Journal, 2023
The Lunar Dust Experiment (LDEX) on board the Lunar Atmosphere and Dust Environment Explorer mission orbited the Moon from 2014 September to 2015 April and observed a dynamic, permanently present dust cloud produced by continual meteoroid bombardment. In
Edwin Bernardoni   +2 more
doaj   +1 more source

A Cryopreservation‐Based Supply Chain Strategy for Extrusion Bioprinting in Space

open access: yesAdvanced Materials Technologies, EarlyView.
Extrusion bioprinting on crewed space platforms requires a bioink that stays functional along the logistic chain. Here, cells and biomaterial ink travel separately, the cells cryopreserved and the ink cold stored, and are combined only minutes before printing.
Johannes Windisch   +7 more
wiley   +1 more source

Color and Photometric Properties of Newly Formed Impact Craters on the Moon

open access: yesThe Planetary Science Journal
Impact craters and subsequent secondary impacts from sparse distal ejecta alter the exposed lunar regolith and affect its maturity. Remotely sensed observations sample the upper few microns of regolith; therefore, our interpretations of the surface must ...
Emerson Speyerer   +6 more
doaj   +1 more source

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

open access: yesAdvanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang   +14 more
wiley   +1 more source

Water Generation on the Moon from Solar Wind and Meteoroid Impacts

open access: yesThe Planetary Science Journal
The kinetics of water formation on the lunar surface from impact-driven melts (IM) of meteoroids and recombinative desorption (RD) of solar-wind-implanted regolith grains is assessed.
Brant M. Jones   +4 more
doaj   +1 more source

Latitude Variation of Flux and Impact Angle of Asteroid Collisions with Earth and the Moon

open access: yesThe Planetary Science Journal, 2021
Flux and impact angles were calculated for asteroid collisions with Earth and the Moon, using the latest population models for the distribution of near-Earth objects (NEOs) and precession models to determine the impact probabilities.
Darrel Robertson   +4 more
doaj   +1 more source

Performance of Lunar Regolith Shield under Meteoroid Impact: Uncertainties of a Numerical Prediction

open access: yesApplied Sciences, 2022
The protection of the future lunar base from radiation, thermal stresses and impacts of meteoroids can be achieved by several options, generally consisting in a shielding system, made of either regolith or combined materials.
Alessia Verdino   +4 more
doaj   +1 more source

Simultaneous impact and lunar craters [PDF]

open access: yesThe Moon, 1973
The existence of large terrestrial impact crater doublets and Martian crater doublets that have been inferred to be impact craters demonstrates that simultaneous impact of two or more bodies occurs at nearly the same point on planetary surfaces. An experimental study of simultaneous impact of two projectiles near one another shows that doublet craters ...
openaire   +1 more source

Morphological and morphometric aspects of the equine aortic valve: New insights for comparative studies in mammals

open access: yesThe Anatomical Record, EarlyView.
Abstract New data on the equine aortic valve obtained using advanced techniques is especially important given the greater availability of animal models for translational research. Here we characterized the morphological and morphometric aspects of the equine aortic valve from 60 healthy hearts collected at equine abattoirs.
Vitor Pires Pereira   +3 more
wiley   +1 more source

Orientale Basin as a Guide for Identifying Lunar Basin Datable Impact Melt and Assessing Impact Melt Differentiation

open access: yesThe Planetary Science Journal
Two fundamental questions face lunar scientists: (1) What is the absolute age of each lunar impact basin and thus the early impact flux curve? (2) To what degree did basin impact melt seas undergo differentiation? We compiled a 1:200,000-scale geological
Kirby Runyon   +7 more
doaj   +1 more source

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