Results 71 to 80 of about 15,938 (229)

Three-dimensional shape distribution of lunar regolith particles collected by the Apollo and Luna programs

Earth, Planets and Space, 2022
The shapes of regolith particles on airless bodies, such as the Moon and asteroids, are important to understand their formation and evolution on surfaces.
Akira Tsuchiyama, Takashi Sakurama, Tsukasa Nakano, Kentaro Uesugi, Makiko Ohtake, Takashi Matsushima, Kazuo Terakado, Erik M. Galimov   +7 more
doaj   +1 more source

Spectral variability on primitive asteroids of the Themis and Beagle families: space weathering effects or parent body heterogeneity?

, 2016
Themis is an old and statistically robust asteroid family populating the outer main belt, and resulting from a catastrophic collision that took place 2.5$\pm$1.0 Gyr ago.
Barucci, M. A., Campins, H., Fornasier, S., Lantz, C., Nesvorny, D., Perna, D.   +5 more
core   +3 more sources

Technologized Reproduction in Space: A Space‐Bioethical Case for Assisted Procreation

Bioethics, EarlyView.
ABSTRACT With the increasing feasibility of space colonization, the issue of reproduction in space is becoming more relevant. As new settlements on the Moon, Mars, and other celestial bodies emerge, ensuring generational continuity will be essential for the survival and growth of these communities.
Maurizio Balistreri, Konrad Szocik
wiley   +1 more source

Mineralogy and Surface Composition of Asteroids [PDF]

, 2015
Methods to constrain the surface mineralogy of asteroids have seen considerable development during the last decade with advancement in laboratory spectral calibrations and validation of our interpretive methodologies by spacecraft rendezvous missions. This has enabled the accurate identification of several meteorite parent bodies in the main asteroid ...
Reddy, Vishnu, Dunn, Tasha L., Thomas, Cristina A., Moskovitz, Nicholas A., Burbine, Thomas H.   +4 more
openaire   +2 more sources

Dynamical environment in the vicinity of asteroids with an application to 41 Daphne

Results in Physics, 2018
We studied the dynamical environment in the vicinity of the primary of the binary asteroid. The gravitational field of the primary is calculated by the polyhedron model with observational data of the irregular shape. The equilibrium points, zero-velocity
Yu Jiang
doaj   +1 more source

Asteroid Family Physical Properties

, 2015
An asteroid family is typically formed when a larger parent body undergoes a catastrophic collisional disruption, and as such family members are expected to show physical properties that closely trace the composition and mineralogical evolution of the ...
DeMeo, Francesca, Kasuga, Toshihiro, Masiero, Joseph, Parker, Alex H.   +3 more
core   +1 more source

New knowledge about shock events that affected the L‐chondrite parent body from two heavily shocked L6 meteorite finds

Meteoritics &Planetary Science, EarlyView.
Abstract We report new results from a study of shock‐related features in the L6 ordinary chondrites Northwest Africa (NWA) 4672 and NWA 12841. Our observations confirm the occurrence of eight high‐pressure (HP) minerals in each meteorite, namely, ringwoodite, majorite, akimotoite, wadsleyite, albitic jadeite, lingunite, tuite, and xieite.
I. Baziotis, L. Ferrière, C. Ma, J. Hu, D. Palles, P. D. Asimow   +5 more
wiley   +1 more source

Pre-impact Albedo Map and Photometric Properties of the (65803) Didymos Asteroid Binary System from DART and Ground-based Data

The Planetary Science Journal
This study provides a pre-impact map of the albedo of the Double Asteroid Redirection Test (DART) target Dimorphos corrected for all the effects of viewing geometry, as well as an estimate of photometric roughness for the hemisphere imaged by DART. Other
B. J. Buratti, J. Pittichová, I. Mishra, J. K. Hillier, J. A. Mosher, S. R. Chesley, J. M. Sunshine, O. Barnouin, C. M. Ernst, R. T. Daly, J-Y Li, A. F. Cheng, A. S. Rivkin, J. Rizos   +13 more
doaj   +1 more source

Design of a Formation of Solar Pumped Lasers for Asteroid Deflection [PDF]

, 2012
This paper presents the design of a multi-spacecraft system for the deflection of asteroids. Each spacecraft is equipped with a fibre laser and a solar concentrator. The laser induces the sublimation of a portion of the surface of the asteroid.
Christie Alisa Maddock, Colombo, Colombo, Delbò, Gong, Hu, Jeong, Jeong, Kahle, Maddock, Massimiliano Vasile, Park, Phipps, Phipps, Rossi, Sanchez Cuartielles, Toon, Vasile, Vasile, Vasile, Vasile, Wang, Weksler, Yoo   +23 more
core   +2 more sources

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source