Results 61 to 70 of about 429,909 (224)
Autonomous planetary rovers operate in GPS‐denied, low‐texture, crater‐rich environments where traditional SLAM‐based navigation systems suffer from localization drift and unreliable obstacle handling. To address these challenges, this work proposes a Space‐ROS–based autonomous navigation framework integrating ROS2 with the NAV2 stack, RTAB‐Map visual ...
Imnul Haque Ruman Talukder +5 more
wiley +1 more source
A Simplified Ordinary Differential Equation for the Surface Temperature of Airless Bodies
Abstract In this work, we develop simplified surface temperature models for spherical bodies with insignificant atmospheres, able to produce a latitude/longitude temperature map that includes seasonality effects. We start from the commonly employed depth‐dependent model by Spencer et al. (1989, https://doi.org/10.1016/0019‐1035(89)90182‐6) based on the
Stefano Boccelli +2 more
wiley +1 more source
Electrostatic Dust Analyzer for Dust Transport Measurements on the Lunar Surface
Lunar dust charging and transport is a more than five-decade-old problem. A high-fidelity and flight-qualified Electrostatic Dust Analyzer (EDA) has been developed to measure the charge, velocity, mass (size), and flux of electrostatically lofted dust ...
X. Wang +14 more
doaj +1 more source
Effect of Nanofibers on Spore Penetration and Lunar Dust Filtration [PDF]
The results of two separate studies on biological spore penetration and simulated lunar dust filtration illustrate the use of nanofibers in some nonstandard filtration applications (nanofibers are generally defined as having diameters of less than a ...
Phil Gibson, Ph.D. +5 more
doaj
Abstract If a spacecraft loses contact with Earth, ground‐based observatories can collect observations to assist the recovery effort by providing information on spacecraft location and state. Optical observations converted to a light curve of spacecraft magnitude over time show the spin period and/or orientation of the spacecraft.
A. V. Steckel, B. L. Ehlmann
wiley +1 more source
The LimPa mission: a small mission proposal to characterize the enigmatic lunar dust exosphere
The lunar environment is known to be characterized by complex interactions between plasma, the exosphere, dust, and the surface. However, our understanding of the environment is limited due to the lack of experimental evidence.
Yoshifumi Futaana +5 more
doaj +1 more source
The mysterious “lunar horizon glow” observed in the 1960s and 1970s was the first space observation possibly related to electrostatic dust transport; however, are there really large amounts of electrostatically transported dust particles in the lunar ...
Yongjun Wang +15 more
doaj +1 more source
Lunar Rickshaw – A non-Motorized Vehicle Designed for Exploration and Rescue Missions on the Moon’s South Pole [PDF]
We have designed a simple, lightweight vehicle concept—a Lunar Rickshaw (LR)—engineered to rapidly and safely transport an incapacitated astronaut from a remote location to the Lunar Module (LM).
Marius POP +5 more
doaj +1 more source
Abstract Affordable and effective early warning of saline intrusion into aquifers is a key challenge affecting coastal water supplies. This paper reports on self‐potential (SP) monitoring close to a mobile saline‐fresh water interface over a 3‐month period.
T. S. L. Rowan +7 more
wiley +1 more source
Abstract Recently, possible exceptionally young mare volcanic glass beads were discovered in Chang'e‐5 (CE‐5) samples. Isotopic dating suggests an age of approximately 120 Ma, presenting new challenges to existing lunar thermal evolution models. Thus, our research focuses on the source region of Rima Mairan, a branch of Rima Sharp, and its surrounding ...
Zhonglu Lei +6 more
wiley +1 more source

