Results 31 to 40 of about 269,247 (211)

VUV and mid‐UV photoabsorption cross sections of thin films of glycine and alanine: Application to their photochemistry in the solar system

Photochemistry and Photobiology, EarlyView.
Thin solid films of pure glycine or alanine (thicknesses ranging from 10 to 700 nm) were prepared on MgF2 windows using a vacuum sublimation/recondensation method. VUV‐UV spectroscopy of these films enabled us to characterize new absorption cross sections for glycine and alanine for VUV‐UV radiations between 120 and 300 nm.
Juliette Pastore, Hervé Cottin, Kafila Saïagh, Jodie Belilla, Fabien Stalport, Nicolas Fray, Nathalie Carrasco   +6 more
wiley   +1 more source

Laboratory studies of interplanetary dust [PDF]

, 1986
Interplanetary dust particles (IDPs) are a form of primitive extraterrestrial material. In spite of the formidable experimental problems in working with particles that are too small to be seen with the naked eye, it has proven possible to obtain ...
Walker, R. M.
core  

Explainer: what is interplanetary dust and can it spread the ingredients of life? [PDF]

, 2015
First paragraph: NASA recently reported that a cloud of dust was surrounding Mars high above its atmosphere. The authors of the study ruled out Mars itself and its moons Phobos and Deimos as the sources of the dust and concluded that it must come from a ...
Schroeder, Christian
core  

Updating the Electrostatic Model for Dust Impact Detection with Antenna Instruments

The Astrophysical Journal
Antenna instruments deployed in space are known to be sensitive to dust impacts, and the detected signals can be used to characterize the dust populations within the solar system.
Austin Matheus Smith, Zoltan Sternovsky, Antal Juhász, David Malaspina, Petr Pokorný   +4 more
doaj   +1 more source

Plasma and Electric Environment Within Lunar Pits and Caves Exposed to the Solar Wind

Geophysical Research Letters, Volume 53, Issue 21, 16 November 2026.
Abstract We have assessed the plasma and electric environment within a lunar pit and its connected subsurface cave utilizing plasma simulations. It is shown that adjacent illuminated and shadowed regions along the interior walls of the pit induce differential charging, exceeding the levels typically observed on open planar surfaces.
Y. Miyake, J. Nakazono
wiley   +1 more source

Layer silicates in a chondritic porous interplanetary dust particle

, 1985
Analytical electron microscopy on individual grains from a portion of a chondritic porous interplanetary dust particle (aggregate W7029C1 from the NASA Johnson Space Center Cosmic Dust Collection) shows that layer silicates compose 50 percent of the ...
Rietmeijer, Frans J.M., Rietmeijer, F. J. M., Mackinnon, Ian D.R., Mackinnon, Ian D. R., Ian D. R. Mackinnon, Frans J. M. Rietmeijer   +5 more
core   +1 more source

Production, Transport, and Destruction of Dust in the Kuiper Belt: The Effects of Refractory and Volatile Grain Compositions

The Astrophysical Journal Letters
The Venetia Burney Student Dust Counter (SDC) on board the New Horizons spacecraft measures the spatial and size distributions of dust along its trajectory.
Thomas Corbett, Alex Doner, Mihály Horányi, Pontus Brandt, Will Grundy, Carey M. Lisse, Joel Parker, Lowell Peltier, Andrew R. Poppe, Kelsi N. Singer, S. Alan Stern, Anne J. Verbiscer   +11 more
doaj   +1 more source

Motion of dust ejected from the surface of asteroid (101955) Bennu

Heliyon, 2020
From Jan. 6, 2019 to Feb. 18, 2019, OSIRIS-REx observed asteroid (101955) Bennu ejecting 11 plumes of dust, of which part is escaping and another part is re-captured by the asteroid.
Yu Jiang, Jürgen Schmidt
doaj   +1 more source

Laboratory Experiments Identify Meteoritic Organic Precursors for Chlorinated Compounds Detected by the Sample Analysis at Mars (SAM) Instrument at Gale Crater

Journal of Geophysical Research: Planets, Volume 131, Issue 11, November 2026.
Abstract The Viking missions landed two spacecraft on Mars each equipped with a pyrolysis‐gas chromatograph‐mass spectrometer system capable of detecting signs of life. Although working as intended, detections of chloromethane and dichloromethane were initially attributed to terrestrial contamination.
A. Mojarro, J. Herrera, A. Sistiaga, S. S. O’Reilly, J. C. Aponte, A. Buch, J. L. Eigenbrode, D. P. Glavin, C. Freissinet, M. Millan, C. Szopa, R. E. Summons   +11 more
wiley   +1 more source

Infrared emission from interplanetary dust [PDF]

, 1989
The infrared sky is dominated on large scales by emission from interplanetary dust, which produces the zodiacal emission (ZE), and interstellar dust. These two components of the infrared background differ in angular and spectral distribution, allowing ...
Reach, William T.
core