Results 31 to 40 of about 1,458 (122)

A survey of debris trails from short-period comets

open access: yes, 2007
We observed 34 comets using the 24 micron camera on the Spitzer Space Telescope. Each image contains the nucleus and covers at least 10^6 km of each comet's orbit. Debris trails due to mm-sized or larger particles were found along the orbits of 27 comets;
Kelley, Michael S.   +2 more
core   +1 more source

The Role of Digital Twin for Space and Remote Terrestrial Construction

open access: yesDigital Twins and Applications, Volume 3, Issue 1, January/December 2026.
This article explores digital twin technology's critical role in construction for extreme environments, including space habitats and remote terrestrial infrastructure. It highlights strategic advantages, discusses essential governance and policy frameworks, and identifies emerging technological trends, emphasising the transformative potential for ...
Ehsan Noroozinejad Farsangi
wiley   +1 more source

Possible Pliocene loess formation caused by tectonic uplift and aridification in Central Otago, New Zealand

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 68, Issue 5, Page 1232-1248, December 2025.
ABSTRACT Loess is a patchy but widespread constituent of East and Central Otago (South Island, New Zealand), where it attests to extensive aerial mobilisation and deposition of fine‐grained sediment. While most Otago loess deposits formed in the Pleistocene, we examine massive, fine‐grained but clay‐altered, Pliocene beds in Central Otago that may be ...
James M. Scott   +4 more
wiley   +1 more source

New Li Lidar Observations and Model Simulations: A Window to Anthropogenic Signatures

open access: yesGeophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract We present Li lidar observations in the mesopause region above Kühlungsborn, Germany (54°N, 12°E). The lithium layer is mainly formed by meteoric ablation. But lithium has a much higher relative abundance in space debris compared with meteoroids, making it a good indicator of anthropogenic influence in the upper mesosphere.
M. Gerding   +4 more
wiley   +1 more source

Designing dual-plate meteoroid shields: A new analysis [PDF]

open access: yes
Physics governing ultrahigh velocity impacts onto dual-plate meteor armor is discussed. Meteoroid shield design methodologies are considered: failure mechanisms, qualitative features of effective meteoroid shield designs, evaluating/processing meteoroid ...
Bamford, R., Chen, R., Swift, H. F.
core   +1 more source

Fifty years of research on the Joulters ooid sandbody—Impact on carbonate sedimentology and diagenesis and lessons learned from an invaluable analogue

open access: yesThe Depositional Record, Volume 11, Issue 5, Page 1399-1432, November 2025.
The Joulters ooid sandbody of northern Great Bahama Bank is a vast expanse of muddy ooid sands partly rimmed by clean ooid sands and formed into a relatively thick layer of significant extent. Knowledge of the development of depositional and diagenetic patterns in the Joulters example has forwarded our general understanding of carbonate sedimentology ...
Paul (Mitch) Harris
wiley   +1 more source

Study of Unmanned Systems to Evaluate the Martian Environment. Volume II - Experiments [PDF]

open access: yes
Unmanned space mission to determine Martian environmental factors influencing design of systems for manned space mission to Mars - mission experiment ...
Dergarabedian, P., Sohn, R. L.
core   +1 more source

Cosmic dust in the atmosphere and in the interplanetary space at 1 AU today and in the early solar system [PDF]

open access: yes
A description of techniques used in recent experiments to detect and analyze cosmic dust and micrometeorites is given and the results both from the study of lunar crater statistics and from in situ measurements are reviewed. The results from lunar crater
Fechtig, H.
core   +1 more source

‘Exosomes’: The Hype, the Chasm, and Beyond

open access: yes
Journal of Extracellular Biology, Volume 5, Issue 2, February 2026.
Natasa Zarovni, Konstantin Glebov
wiley   +1 more source

IDE spatio-temporal impact fluxes and high time-resolution studies of multi-impact events and long-lived debris clouds [PDF]

open access: yes
The purpose of the Interplanetary Dust Experiment (IDE) on the Long Duration Exposure Facility (LDEF) was to sample the cosmic dust environment and to use the spatio-temporal aspect of the experiment to distinguish between the various components of the ...
Cooke, William J.   +8 more
core   +1 more source

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