Results 111 to 120 of about 9,746 (287)

Microbial Endolithic Community at Meteor Crater

Meteoritics &Planetary Science, EarlyView.
Abstract Postimpact recovery and evolution in response to climate changes produced a modern ecosystem at Meteor Crater dominated by a grassland and woodland of piñon and juniper, which has been used to evaluate floral and megafaunal consequences of impact cratering during the Phanerozoic Eon of complex life.
David A. Kring, Charles S. Cockell
wiley   +1 more source

CI chondrite Oued Chebeika 002 links asteroids Bennu and Ryugu to common parent body

Meteoritics &Planetary Science, EarlyView.
Abstract CI chondrites are a compositionally primitive group of meteorites that have undergone extensive aqueous alteration, providing insights into the evolution of primitive planetesimals. Oued Chebeika 002 is the most pristine CI chondrite to date.
Megan Broussard, Katharina Lodders, Paul K. Carpenter, Piers Koefoed, Karen Ziegler, Kunihiko Nishiizumi, Marc W. Caffee, Laurence A. J. Garvie, Ryan C. Ogliore, Anthony J. Irving, Bradley L. Jolliff, Kun Wang   +11 more
wiley   +1 more source

Meteoroid flux at sub-meter scales is homogeneous across the Lunar nearside and farside

Communications Earth & Environment
The spatial heterogeneity of meteoroid impact flux has shaped the space weathering environment across the lunar surface, driving key evolutionary processes such as crater degradation, regolith gardening, and soil grain exposure.
Renrui Liu, Sizhe Zhao, Yi Xu, Qiquan Yang, Xiaoping Zhang, Chenkun Sun, Pengwei Luo, Rui Chen, Yanyan Xu, Xindong Meng, Jiahui Liu, Yun Qin, Yang Li   +12 more
doaj   +1 more source

Martian buildings: structural forms using in-place sources. [PDF]

Sci Rep, 2022
Soureshjani OK, Massumi A.
europepmc   +1 more source

Gross-fragmentation of meteoroids and bulk density of Geminids from photographic fireball records [PDF]

The explicit solution of the drag and ablation equations of a single nonfragmenting meteoroid moving in any actual atmosphere was published several years ago.
Ceplecha, Zdenek, Mccrosky, R. E.
core   +1 more source

Ryugu Reference Project: Recommendations from the Measurement Definition Team

Meteoritics &Planetary Science, EarlyView.
Abstract Sample return missions play a significant role in planetary science by providing pristine extraterrestrial materials. JAXA's Hayabusa2 and NASA's OSIRIS‐REx missions have returned samples from the C‐type asteroids Ryugu and Bennu, respectively. The chemical and mineralogical compositions of these samples closely resemble those of CI chondrites,
Tetsuya Yokoyama, Guillaume Avice, Henner Busemann, Nicolas Dauphas, Daniel P. Glavin, Ashley J. King, Thorsten Kleine, Katharina Lodders, Frederic Moynier, Maria Schönbächler, Yoshinori Takano, Kun Wang, Hikaru Yabuta, Yuma Enokido, Ryota Fukai, Shogo Tachibana, Tomohiro Usui   +16 more
wiley   +1 more source

Achondrites in meteor data: Spectra, dynamics, and physical properties of candidate aubrite and eucrite impactors

Astronomy & Astrophysics
Meteor spectroscopy presents new opportunities for investigating the diversity of small Solar System bodies and capturing the real distribution of present material types. In this work, we analyzed a sample of 180 higher-resolution meteor spectra from the
Matlovič P., Pisarčíková A., Pazderová V., Vörös T., Hlobik F., Devillepoix H. A. R., Borovička J., Paprskárová M., Deam S. E., Tóth J., Kornoš L., Paulech T., Zigo P.   +12 more
doaj   +1 more source

Phobos and Deimos are sources of meteoroids [PDF]

Data of Pioneer 10 meteoroid penetration detectors were revised taking into account the orientation of detectors and the spacecraft velocity relative to the sporadic meteor flux.
Andreev, V. V., Belkovich, Oleg I.
core   +1 more source

Geophysical investigation of the Santa Marta impact structure—Piauí State, Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The Santa Marta impact structure in northeastern Brazil, recognized as a partially preserved complex crater, was investigated through an integrated geophysical study employing magnetotelluric (MT) and gravity methods. Our research provides constraints on the crater's subsurface architecture.
Elienara Vasconcelos, João De Oliveira, Marcos Vasconcelos, Martyn Unsworth, Andrea Santos‐Matos, Florivaldo Sena   +5 more
wiley   +1 more source

Modeling Atmospheric Alteration on Titan: Hydrodynamics and Shock-induced Chemistry of Meteoroid Entry

The Astrophysical Journal
Meteoroid entry into planetary atmospheres generates bow shocks, resulting in high-temperature gas conditions that drive chemical reactions. In this paper, we perform three-dimensional hydrodynamic simulations of meteoroid entry using the Athena++ code ...
Ryushi Miyayama, Laura Kay Schaefer, Hiroshi Kobayashi, Andrea Zorzi   +3 more
doaj   +1 more source