Results 161 to 170 of about 992,600 (206)

Abiotic sugar enantiomers in the CI carbonaceous chondrite Orgueil. [PDF]

Nat Commun
Leyva V, Robert M, Pepino R, Bocková J, Meinert C.   +4 more
europepmc   +1 more source

Dynamics around small irregularly shaped objects modeled as a mass dipole. [PDF]

Sci Rep
Abozaid AA, Radwan M, Ibrahim AH, Bakry A.   +3 more
europepmc   +1 more source

Reversible Opacification of Intraocular Lens in vitro: Case Report. [PDF]

Case Rep Ophthalmol
Li Y, Chen B, Lu Y.
europepmc   +1 more source

Enhanced RNA Formation Under Amine-Rich Local Atmospheres from 2’,3’-Cyclic Nucleotides

Schmid A, Kovařík A, Hintz J, Wunnava S, Palacký J, Krepl M, Šedo O, Havel Š, Ślepokura K, Šponer J, Mojzeš P, Mast CB, Zdráhal Z, Braun D, Šponer JE.   +14 more
europepmc   +1 more source

Abiotic sugars in (162173) Ryugu and the primitive CI carbonaceous chondrite Orgueil

Meinert C, Leyva V, Robert M, Pepino R, Bocková J.   +4 more
europepmc   +1 more source

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Optical maturation of asteroid surfaces

Icarus, 2013
Abstract Analysis of laboratory experiments simulating space weathering optical effects on atmosphereless planetary bodies reveals that the time needed to alter the spectrum of an ordinary chondrite meteorite to resemble the overall spectral shape and slope of an S-type asteroid is about ∼10 5  yr.
E A Cloutis
exaly   +2 more sources

SPACE WEATHERING OF ASTEROID SURFACES

Annual Review of Earth and Planetary Sciences, 2004
▪ Abstract  Visible and near-infrared spectra of reflected sunlight from asteroid surfaces exhibit features that hold the promise for identifying surface mineralogy. However, the very surfaces that are observed by remote-sensing are also subject to impingement by micrometeoroids and solar wind particles, which are believed to play the dominant role in ...
Clark R Chapman
exaly   +2 more sources

The Impact Record on Asteroid Surfaces

Astrophysics and Space Science Library, 2001
The surfaces of main-belt and near-Earth asteroids have been carved over the age of the solar system by violent collisions with other asteroids. The craters and related features left behind can be used to interpret each asteroid's unique impact history, which depends on several factors: (i) the dynamical and physical properties of the asteroid (e.g ...
W. F. Bottke, R. Greenberg
exaly   +2 more sources

Asteroidal agglutinate formation and implications for asteroidal surfaces

Icarus, 1981
The possible role of spallation on the free surfaces of target bodies in asteroid surface evolution in the presence of colliding bodies is considered. The ease of impact melt formation is discussed based on the results of shock recovery experiments, and a difference between collisions with dense, nonporous targets and with porous, particulate powders ...
Friedrich Hörz, Rand B. Schaal
openaire   +1 more source

Detection of ice and organics on an asteroidal surface

Nature, 2010
Recent observations, including the discovery in typical asteroidal orbits of objects with cometary characteristics (main-belt comets, or MBCs), have blurred the line between comets and asteroids, although so far neither ice nor organic material has been detected on the surface of an asteroid or directly proven to be an asteroidal constituent.
Andrew S, Rivkin, Joshua P, Emery
openaire   +2 more sources