Results 21 to 30 of about 466 (130)

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Seasonal changes of the volatile density in the coma and on the surface of comet 67P/Churyumov–Gerasimenko [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
Starting from several monthly data sets of Rosetta's COmetary Pressure Sensor we reconstruct the gas density in the coma around comet 67P/Churyumov-Gerasimenko. The underlying inverse gas model is constructed by fitting ten thousands of measurements to thousands of potential gas sources distributed across the entire nucleus surface.
Kramer, Tobias, Laeuter, Matthias, Rubin, Martin, Altwegg, Kathrin   +3 more
openaire   +2 more sources

Visible, near‐, and thermal infrared spectra of asteroid Bennu samples: Relationship to and implications for remote sensing of carbonaceous asteroids

Meteoritics &Planetary Science, EarlyView.
Abstract Remote spectroscopy is used to characterize the mineralogy and infer the history of planetary bodies. Carbonaceous asteroids, such as B‐type (101955) Bennu, represent the earliest stages of planet formation. B types have a blue (negative) spectral slope and comprise <5% of asteroids.
V. E. Hamilton, E. A. Cloutis, R. E. Milliken, P. Haenecour, D. R. Golish, K. J. Domanik, T. J. McCoy, L. P. Keller, A. A. Simon, H. H. Kaplan, C. A. Goodrich, S. A. Sandford, D. Applin, T. Hiroi, D. H. Hill, N. G. Lunning, F. M. McCubbin, S. A. Eckley, C. J. Snead, E. H. Blumenfeld, J. E. Aebersold, C. Schultz, N. Bowles, K. A. Shirley, S. S. Russell, J. J. Barnes, T. J. Zega, D. N. DellaGiustina, A. J. Ryan, D. P. Glavin, J. P. Dworkin, H. C. Connolly Jr., D. S. Lauretta   +32 more
wiley   +1 more source

The Composition of Comet C/2012 K1 (PanSTARRS) and the Distribution of Primary Volatile Abundances Among Comets

The Astronomical Journal, 2017
Abstract On 2014 May 22 and 24 we characterized the volatile composition of the dynamically new Oort cloud comet C/2012 K1 (PanSTARRS) using the long-slit, high resolution (λ/Δλ ≈ 25,000) near-infrared echelle spectrograph (NIRSPEC) at the 10 m Keck II telescope on Maunakea, Hawaii.
Nathan X. Roth, Erika L. Gibb, Boncho P. Bonev, Michael A. DiSanti, Michael J. Mumma, Geronimo L. Villanueva, Lucas Paganini   +6 more
openaire   +1 more source

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

Meteoritics &Planetary Science, EarlyView.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà, A. Vyjidak, G. A. Baratta, B. M. Giuliano, R. G. Urso, C. Scirè, D. Fulvio, T. Grassi, P. Jusko, P. Caselli, M. E. Palumbo   +10 more
wiley   +1 more source

Evaluating School‐Based Obesity Prevention Interventions in 6‐ to 12‐Year‐Old Children: A Scoping Review of All Reported Outcomes and Expert Consultation

Obesity Reviews, EarlyView.
ABSTRACT Introduction This scoping review aims to identify all outcomes reported in school‐based obesity prevention interventions in childhood. It serves as an essential first step towards developing an internationally agreed‐upon Core Outcome Set (COS), which defines what should be measured in all school‐based childhood obesity prevention studies ...
Teatske M. Altenburg, Lotte W. de Vries, Iris J. Grooten, Janneke van 't Hooft, Arend W. van Deutekom, Tessa Roseboom, Erica van den Akker, Michael Duncan, Ulf Ekelund, John J. Reilly, Lisa Reilly, Annette Stafleu, Martyn Standage, Mai J. M. Chinapaw, Deirdre M. Harrington   +14 more
wiley   +1 more source

The Peculiar Volatile Composition of CO-dominated Comet C/2016 R2 (PanSTARRS) [PDF]

The Astronomical Journal, 2019
Abstract Comet C/2016 R2 (PanSTARRS) has a peculiar volatile composition, with CO being the dominant volatile, as opposed to H2O, and one of the largest N2/CO ratios ever observed in a comet. Using observations obtained with the Spitzer Space Telescope, NASA’s Infrared Telescope Facility, the 3.5 m Astrophysical Research Consortium ...
Adam J. McKay, Michael A. DiSanti, Michael S. P. Kelley, Matthew M. Knight, Maria Womack, Kacper Wierzchos, Olga Harrington Pinto, Boncho Bonev, Geronimo L. Villanueva, Neil Dello Russo, Anita L. Cochran, Nicolas Biver, James Bauer, Ronald J. Vervack, Jr., Erika Gibb, Nathan Roth, Hideyo Kawakita   +16 more
openaire   +4 more sources

Chemical Exposures, DNA Methylation and Whole Blood DNA Damage in Pet Golden Retrievers

Veterinary and Comparative Oncology, EarlyView.
ABSTRACT Canine multicentric lymphoma (CL) is a common and typically fatal cancer among dogs. Although certain breeds have a higher incidence of CL, its environmental risk factors remain uncertain. Exposures to herbicides and volatile organic compounds (VOCs) associate with non‐Hodgkin lymphoma in people.
Ashleigh N. Tindle, Mark E. Berres, Lauren Baker, Zhuonan Wu, Brenna Swafford, Julia Labadie, Lauren A. Trepanier   +6 more
wiley   +1 more source

UNCORRELATED VOLATILE BEHAVIOR DURING THE 2011 APPARITION OF COMET C/2009 P1 GARRADD [PDF]

The Astronomical Journal, 2013
The High Resolution Instrument Infrared Spectrometer (HRI-IR) onboard the Deep Impact Flyby spacecraft detected H2O, CO2, and CO in the coma of the dynamically young Oort cloud comet C/2009 P1 (Garradd) post-perihelion at a heliocentric distance of 2 AU.
Feaga, Lori M., A'Hearn, Michael F., Farnham, Tony L., Bodewits, Dennis, Sunshine, Jessica M., Gersch, Alan M., Protopapa, Silvia, Yang, Bin, Drahus, Michal, Schleicher, David G.   +9 more
openaire   +3 more sources

Renewing Concerns of Technical Complexity in Accidents Research: An Argument to Retain Perrow's “First Thesis”

Journal of Contingencies and Crisis Management, Volume 34, Issue 3, September 2026.
ABSTRACT It has been 40 years since Charles Perrow published the landmark work Normal Accidents ([1984]1999), built largely on an analysis of the Three Mile Island (TMI) nuclear power plant accident. While still a highly influential framework in the study of complex systems, the status of the argument remains in flux.
Joseph H. Spear
wiley   +1 more source