Results 71 to 80 of about 2,531 (226)

New Horizons Venetia Burney Student Dust Counter Observes Higher than Expected Fluxes Approaching 60 au

The Astrophysical Journal Letters
The NASA New Horizons Venetia Burney Student Dust Counter (SDC) measures dust particle impacts along the spacecraft’s flight path for grains with mass ≥10 ^−12 g, mapping out their spatial density distribution.
Alex Doner, Mihály Horányi, Fran Bagenal, Pontus Brandt, Will Grundy, Carey Lisse, Joel Parker, Andrew R. Poppe, Kelsi N. Singer, S. Alan Stern, Anne Verbiscer   +10 more
doaj   +1 more source

Geo-engineering using dust grains in heliotropic elliptical orbits

, 2011
This paper examines the concept of a Saturn-like Earth ring comprised of dust grains to offset global warming. A new family of non-Keplerian periodic orbits, under the effects of solar radiation pressure and the Earth’s oblateness J2 perturbation, is ...
Bewick, Russell, Colombo, Camilla, Sanchez Cuartielles, Joan-Pau, Sanchez, J. P., Bewick, R, Lücking, C., McInnes, Colin, Mcinnes, C. R., Lucking, Charlotte   +8 more
core  

Model calculations for cosmogenic nuclides in meteorites and the lunar surface. 1. Long‐lived radionuclides

Meteoritics &Planetary Science, Volume 61, Issue 4, Page 600-620, April 2026.
Abstract Production rates for the cosmogenic radionuclides 10Be, 14C, 26Al, 36Cl, 41Ca, 53Mn, and 60Fe in a large variety of meteorites, that is, ordinary chondrites (H, L, LL), carbonaceous chondrites, HED meteorites, ureilites, Martian meteorites, and iron meteorites and in the uppermost ~2 m of the lunar surface are modeled.
Ingo Leya
wiley   +1 more source

Toward a General Theory of Grain Alignment and Disruption by Radiative Torques and Magnetic Relaxation

The Astrophysical Journal
We generalize the magnetically enhanced radiative torque (MRAT) theory for astrophysical environments described by a dimensionless parameter U /( n _1 T _2 ) with U the radiation strength, n _1  =  n _H /(10 cm ^−3 ) the normalized hydrogen density, and ...
Thiem Hoang
doaj   +1 more source

Fine-grained interplanetary dust input during the Turonian (Late Cretaceous): evidence from osmium isotope and platinum group elements. [PDF]

Sci Rep, 2023
Matsumoto H, Ishikawa A, Coccioni R, Frontalini F, Suzuki K.   +4 more
europepmc   +1 more source

Laboratory studies of interplanetary dust

, 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  

Cover

Meteoritics &Planetary Science, Volume 61, Issue 6, June 2026.
wiley   +2 more sources

Cometary micrometeorites and input of prebiotic compounds

BIO Web of Conferences, 2014
The apparition of life on the early Earth was probably favored by inputs of extraterrestrial matter brought by carbonaceous chondrite-like objects or cometary material. Interplanetary dust collected nowadays on Earth is related to carbonaceous chondrites
Engrand C.
doaj   +1 more source

Momentum transfer to interplanetary dust from the solar wind

, 2004
Solar-wind particles striking dust grains in orbit around the sun exert not only a repulsive force on the grains, but also a drag force, called the plasma or pseudo Poynting-Robertson (PR) effect, which limits their dynamical lifetimes.
T. Minato, M. Köhler, I. Mann, T. Yamamoto, H. Kimura   +4 more
core   +1 more source

A detailed study of the reflection nebula, NGC 7023 [PDF]

, 1982
Polarisation and intensity maps in three broad wavebands are presented for the reflection nebula NGC7023. The data are used to investigate the structure, dust distribution and grain characteristics of the material surrounding the central illuminating ...
Moore, Philip Joseph Ruaraigh McDonald
core