Results 121 to 130 of about 1,838 (234)

Maximal Gravity at the Surface of an Asteroid

, 2003
The maximum strength of gravity at the surface of an object of a given mass is not attained for a spherical shape, but for a small departure from sphericity.
openaire   +2 more sources

Negative Searches for Evidence of Aqueous Alteration on Asteroid Surfaces

, 2005
Small bodies in the Solar System preserve evidence of the processes occurring during early Solar System formation, unlike the larger planets that undergo continuous churning of their surfaces.
Vilas, F.
core  

Combustion and Pyrolysis EA‐IRMS Techniques to Determine the δ2H of Diamonds

Rapid Communications in Mass Spectrometry, Volume 40, Issue 10, 30 May 2026.
ABSTRACT Rationale Diamonds are generally considered to be metasomatic minerals originating from the Earth's mantle. They formed through the interaction of carbon‐bearing fluids or melts with the surrounding deep lithology. Most knowledge about the formation of diamonds comes from studying their mineral inclusions or stable isotopes.
François Fourel, Christophe Lécuyer, Emilie Thomassot, Etienne Deloule, Charles Ojeimi   +4 more
wiley   +1 more source

A Stochastic Cratering Model for Asteroid Surfaces

, 2005
The observed cratering records on asteroid surfaces (four so far: Gaspra, Ida, Mathilde, and Eros [1-4]) provide us with important clues to their past bombardment histories.
Greenberg, R. J., Melosh, H. J., Richardson, J. E.   +2 more
core  

Reactive Molecular Dynamics Simulations of Iron Reduction on Lunar and Asteroidal Surfaces by Micrometeoroids and Solar Wind

The Astrophysical Journal
Regolith grains and rock surfaces altered by space weathering on the Moon and S-type asteroids contain nanometer-sized metallic iron particles, known as nanophase iron (npFe ^0 ).
Daigo Shoji
doaj   +1 more source

Asteroid-GS: 3D Gaussian splatting for fast surface reconstruction of asteroids

Astronomy & Astrophysics
Context. Asteroid surface reconstruction is essential for deep space exploration missions, as it provides critical information about surface morphology that supports spacecraft navigation and sample acquisition. Traditional methods, such as stereo-photogrammetry (SPG) and stereo-photoclinometry (SPC), have been ...
Xiaojie Zhang, Linyan Cui, Xiaodong Wei, Yicong Chen   +3 more
openaire   +1 more source

Fuel-burn penalties caused by irregularities in aircraft surfaces (ASTEROID project)

, 2018
ASTEROID aids economic decisions on manufacturing/servicing tolerances and repair strategies with easy-to-use tools for the estimation of aerodynamic drag and fuel-burn penalties caused by repair patches poorly rigged control surfaces etc.
Shires, A, Hackett, K, Philpott, D, Hinchliffe, B   +3 more
core  

Space environment of an asteroid preserved on micrograins returned by the Hayabusa spacecraft

, 2012
Records of micrometeorite collisions at down to submicron scales were discovered on dust grains recovered from near-Earth asteroid 25143 (Itokawa). Because the grains were sampled from very near the surface of the asteroid, by the Hayabusa spacecraft ...
Tanaka, Ryoji, Fujimura, Akio, Nakamura, Eizo, Tsujimori, Tatsuki, Ueno, Munetaka, Mukai, Toshifumi, Kunihiro, Tak, Sakaguchi, Chie, Abe, Masanao, Kawaguchi, Jun'ichiro, Ota, Tsutomu, Moriguti, Takuya, Makishima, Akio, Kobayashi, Katsura, Kitagawa, Hiroshi, Yoshikawa, Makoto, Yachi, Yusuke, Yada, Toru   +17 more
core   +1 more source

Asteroid Surfaces: The Importance of Cohesive Forces

, 2019
Adhesive forces play a significant role on airless bodies due to their weak gravities. Investigating adhesion at the surface of asteroids and their constituent components is vital to understanding their formation and evolution. Previous research has been
Jardine, Keanna
core  

Near Earth Asteroid Returned Sample Mission (NEARS)

, 1994
NEARS is a small mission to be proposed for the NASA Discovery Program. It will use a modified version of the Near Earth Asteroid Rendezvous spacecraft being developed by the Johns Hopkins Applied Physics Laboratory.
Vernon, S.R., Cheng, A.F.
core   +1 more source