Results 101 to 110 of about 1,064 (199)

The surface of asteroid Bennu [PDF]

Nature Reviews Materials, 2019
openaire   +1 more source

Space Weathering Age of Itokawa and Eros by Machine Learning

The Planetary Science Journal
Near-Earth asteroids such as Itokawa and Eros provide valuable insights into the collisional and surface evolution of the inner solar system. As S-type asteroids, their surfaces are altered by space weathering (SW) from solar wind and micrometeorite ...
Lakshika Palamakumbure, David Korda, Tomáš Kohout   +2 more
doaj   +1 more source

Charged Ejecta Clouds from Granular Beds after Slow Impacts

The Planetary Science Journal
Low-velocity impacts are a significant process on all planetary surfaces, from rebounding particles on asteroids to saltating grains on Earth. Due to triboelectric effects, the material involved can be charged. We carried out experiments to study the net
Matthias Keulen, F. Oehme, G. Wurm, J. E. Kollmer   +3 more
doaj   +1 more source

Asteroid Surface Weathering Optimization

Asteroid surface weathering is an important research topic in astrophysics. Its mechanisms include complex interactions from multiple sources, including micrometeorite impacts, solar wind bombardment, and nano-iron accumulation. Inspired by this natural phenomenon, this paper proposes a novel heuristic optimization algorithm, the Asteroid Surface ...
openaire   +1 more source

The Dehydration of Serpentines and Extraction of Water

The Planetary Science Journal
Some groups of carbonaceous chondrites are dominated by phyllosilicates, specifically the serpentine group, which are characterized as alternating layers of silicates, metal cations, and hydroxyl (OH). Both antigorite, an Mg-rich member, and cronstedtite,
Leos Pohl, Daniel T. Britt
doaj   +1 more source

Methods for Experimental Planetary Geology in Reduced-gravity Parabolic Flight: A Case Study of Researching Impact Crater Ejecta

The Planetary Science Journal
Geologists have long conducted laboratory experiments to offer a controlled environment for understanding processes that occur in nature and linking those processes with natural geologic landforms.
Kirby D. Runyon, Daniel D. Durda, Viliam Klein, Constantine C. C. Tsang, Chloe B. Beddingfield, Carolyn M. Ernst, Olivier S. Barnouin, H. Todd Smith   +7 more
doaj   +1 more source

Topographic recognition of the asteroidal surface

Topographic recognition of the asteroidal surface
A stereo vision system with fisheye lens cameras is newly proposed as an onboard instrument of a future asteroid lander. The system is designed to recognize an entire landscape around the landing/touchdown point with a pair of super-wide-angle fisheye lens cameras.
openaire  

Asteroid sample return missions are critical for understanding our Solar System. [PDF]

Nat Commun
Bates H.
europepmc   +1 more source

Mobilization of Unconsolidated Granular Material on Asteroid (101955) Bennu by Spacecraft Interaction. [PDF]

Space Sci Rev
Bierhaus EB, Songer JT, Mario CE, Norman CD, Miller C, Olds R, Martinez A, Clark BC, Hartzell C, Rizk B, d'Aubigny CD, Nolau J, Allen A, Pajola M, Golish DR, Campins H, Walsh KJ, Ballouz RL, Wolner CWV, Bos BJ, Lauretta DS, Nolan MC, DellaGiustina DN.   +22 more
europepmc   +1 more source

Impact-processed nitrogen-bearing organics in Chang'e-5 and Chang'e-6 lunar regolith. [PDF]

Sci Adv
Dong M, Hao J, Changela HG, Tian H, Huang S, He Y, Liu X, Li X, Hu S, Yang W, Lin Y.   +10 more
europepmc   +1 more source