Results 131 to 140 of about 87,022 (274)

Microgravity‐induced changes in skeletal muscle and possible countermeasures: What we can learn from bed rest and human space studies

Experimental Physiology, EarlyView.
Abstract Despite exercise countermeasures to sustain health and performance in spaceflight, complete maintenance of muscle mass and functions in microgravity is still not possible for most astronauts. The principal cause of the limited effectiveness of existing exercise countermeasures is the difficulty in achieving full loading forces in space.
Alessandra Bosutti, Bergita Ganse, Nicola A. Maffiuletti, Rob C. I. Wüst, Gustav J. Strijkers, Andy Sanderson, Hans Degens   +6 more
wiley   +1 more source

Assessment of Flyby Methods as Applied to Close Encounters among Asteroids

Aerospace
Orbital flybys have been extensively studied for spacecraft missions, resulting in effective mathematical and physical models. However, these models’ applicability to natural encounters involving asteroids has not been explored.
Nicolò Stronati, Marco Fenucci, Marco Micheli, Marta Ceccaroni   +3 more
doaj   +1 more source

Notes on asteroids in the British Museum (Natural History). 2. Some Astropectinid species

, 1950
D Dilwyn John
openalex   +1 more source

The orbit and probable size of a very faint asteroid (878) Mildred

, 1917
Harlow Shapley, Seth B. Nicholson
openalex   +1 more source

Positions of asteroids and Halley's comet [PDF]

, 1912
E. S. Manson
openalex   +1 more source

A New Method for the Discovery of Asteroids

, 1906
Joel H. Metcalf
openalex   +1 more source

Ion Source Complementarity for Characterization of Complex Organic Mixtures Using Fourier Transform Mass Spectrometry: A Review

Mass Spectrometry Reviews, Volume 44, Issue 5, Page 808-829, September/October 2025.
ABSTRACT Complex organic mixtures are found in many areas of research, such as energy, environment, health, planetology, and cultural heritage, to name but a few. However, due to their complex chemical composition, which holds an extensive potential of information at the molecular level, their molecular characterization is challenging.
Charlotte Mase, Maxime Sueur, Hélène Lavanant, Christopher Paul Rüger, Pierre Giusti, Carlos Afonso   +5 more
wiley   +1 more source

Examining the Quantification Capability of Automated Mineralogy System: A Machine Learning Approach

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 3, September 2025.
Abstract Automated mineralogy (AM) systems are a novel platform for material characterization. By analyzing the X‐rays generated from sample–electron interactions, these systems can rapidly and automatically provide mineralogical and textural descriptions of a sample.
Ao Su, Wei Tian, Zilong Wang, Wei‐(RZ) Wang, Ting‐Nan Gong   +4 more
wiley   +1 more source

Transformer-based Approach for Accurate Asteroid Spectra Taxonomy and Albedo Estimation

The Astronomical Journal
China plans to launch a probe (Tianwen-2) around 2025, mainly to explore the near-Earth asteroid 2016 HO3 (469219, Kamo’oalewa). The mission involves close-range exploration, landing, and mining operations that require three-dimensional modeling of the ...
Yijun Tang, Yunxiao Jiang, Yuxiang Feng, Xiaoming Zhang, Xiaojun Jiang   +4 more
doaj   +1 more source

Impact of a Coronal Mass Ejection on the Lunar Exosphere as Observed by CHACE‐2 on the Chandrayaan‐2 Orbiter

Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.
Abstract The Moon encountered an extreme space weather event (NOAA G5 class) on 10 May 2024, caused by a series of coronal mass ejections (CMEs). Chandra's Atmospheric Composition Explorer‐2 (CHACE‐2), a neutral gas mass spectrometer on board Chandrayaan‐2 orbiter, made in situ observations of the lunar exosphere during this period.
M. B. Dhanya, Chemukula Mathin Yadav, Smitha V. Thampi, Tirtha Pratim Das, R. Satheesh Thampi, Anil Bhardwaj   +5 more
wiley   +1 more source