Results 41 to 50 of about 14,591 (218)

A Rotational Disruption Crisis for Zodiacal Dust

The Astrophysical Journal Letters
A systematic torque from anisotropic radiation can rapidly spin up irregular grains to the point of breakup. We apply the standard theory of rotational disruption from radiative torques to solar system grains, finding that grains with radii ∼0.03–3 μ m ...
Kedron Silsbee, Brandon S. Hensley, Jamey R. Szalay, Petr Pokorný, Jeong-Gyu Kim   +4 more
doaj   +1 more source

Ryugu’s Anhydrous Ingredients and Their Spectral Link to Primitive Dust from the Outer Solar System

The Astrophysical Journal Letters, 2023
Ryugu is a second-generation C-type asteroid formed by the reassembly of fragments of a previous larger body in the main asteroid belt. While the majority of Ryugu samples returned by Hayabusa2 are composed of a lithology dominated by aqueously altered ...
R. Brunetto, C. Lantz, Y. Fukuda, A. Aléon-Toppani, T. Nakamura, Z. Dionnet, D. Baklouti, F. Borondics, Z. Djouadi, S. Rubino, K. Amano, M. Matsumoto, Y. Fujioka, T. Morita, M. Kukuiri, E. Kagawa, M. Matsuoka, R. Milliken, H. Yurimoto, T. Noguchi, R. Okazaki, H. Yabuta, H. Naraoka, K. Sakamoto, S. Tachibana, T. Yada, M. Nishimura, A. Nakato, A. Miyazaki, K. Yogata, M. Abe, T. Okada, T. Usui, M. Yoshikawa, T. Saiki, S. Tanaka, F. Terui, S. Nakazawa, S. Watanabe, Y. Tsuda   +39 more
doaj   +1 more source

African Decolonial Theory: A Conversation

Antipode, Volume 58, Issue 2, March 2026.
Abstract Antipode has become a key platform for engaging with decolonial and anticolonial scholarship, as well as adjacent fields such as Black geographies, Indigenous studies, Latin American feminism, and work on settler‐colonialism. African reference points in this literature, however, have been far less common, both in the journal and more broadly ...
Patricia Daley, Sabelo J. Ndlovu‐Gatsheni, Wangui Kimari, Franklin Obeng‐Odoom, Sylvia Tamale, Sybille Bauriedl, Sylvia Bawa, Inken Carstensen‐Egwuom, Grace Adeniyi‐Ogunyankin, Yousuf Al‐Bulushi, Stefan Ouma   +10 more
wiley   +1 more source

Enhanced flux of extraterrestrial 3He across the Permian–Triassic boundary

Progress in Earth and Planetary Science, 2019
The ca 252 Ma Permian–Triassic boundary (PTB) represents the most severe mass extinction event of the Phanerozoic, with the disappearance of ~ 80% of marine invertebrate species.
Tetsuji Onoue, Naoto Takahata, Mitsutaka Miura, Honami Sato, Akira Ishikawa, Katsuhito Soda, Yuji Sano, Yukio Isozaki   +7 more
doaj   +1 more source

Auger spectroscopy of stratospheric particles : the influence of aerosols on interplanetary dust [PDF]

, 1985
Particle collections from the stratosphere via either the JSC Curatorial Program or the U2 Program (NASA Ames) occur between 16km and 19km altitude and are usually part of ongoing experiments to measure parameters related to the aerosol layer.
Mackinnon, Ian D.R., Mogk, David W., Rietmeijer, Frans J.M.   +2 more
core   +1 more source

Shock metamorphic effects in Itokawa phosphates: A comparison with megaregolith‐derived meteorites

Meteoritics &Planetary Science, Volume 61, Issue 3, Page 351-370, March 2026.
Abstract Returned regolith samples from the asteroid Itokawa provide a unique opportunity to compare shock metamorphic effects in unconsolidated regolith materials with those preserved in lithified meteorites, that is, megaregolith. We analyzed four Itokawa particles (Ueda—RA‐QD02‐0519, Narahara—RA‐QD02‐0573, Domon—RA‐QD02‐0588, Ishiuchi—RX‐MD03‐0212 ...
E. Dobrică, A. N. Krot, A. J. Brearley
wiley   +1 more source

Study of Dust Impact Signals around Mars Using MAVEN/LPW Observations

The Astrophysical Journal
This study investigates short (millisecond) pulses detected by the Langmuir Probe and Waves instrument on board the Mars Atmosphere and Volatile Evolution spacecraft.
Samia Ijaz, Jakub Vaverka, Jana Šafránková, Zdeněk Němeček   +3 more
doaj   +1 more source

Mercury's Circumsolar Dust Ring as an Imprint of a Recent Impact

The Planetary Science Journal, 2023
A circumsolar dust ring has been recently discovered close to the orbit of Mercury. There are currently no hypotheses for the origin of this ring in the literature, so we explore four different origin scenarios here: the dust originated from (1) the ...
Petr Pokorný, Ariel N. Deutsch, Marc J. Kuchner   +2 more
doaj   +1 more source

Heliospheric modulation of the interstellar dust flow on to Earth

, 2018
Aims. Based on measurements by the Ulysses spacecraft and high-resolution modelling of the motion of interstellar dust (ISD) through the heliosphere we predict the ISD flow in the inner planetary system and on to the Earth.
Grün, Eberhard, Krüger, Harald, Soja, Rachel, Srama, Ralf, Sterken, Veerle J., Strub, Peter   +5 more
core   +1 more source

Impact‐Generated Mixing, Melting and Vaporization of the Early Earth's Crust

Earth and Space Science, Volume 13, Issue 2, February 2026.
Abstract Earth's primary accretion was followed by a protracted flux of interplanetary collisions by leftover planetesimals. The effects of the largest collisions—with bodies possibly exceeding 1,000 km diameter—would have been devastating for terrestrial near‐surface environments.
S. Marchi, A. M. Alexander, R. Citron, B. C. Johnson   +3 more
wiley   +1 more source