Results 131 to 140 of about 9,980 (290)

Morpho‐structural analysis of impact craters on Pluto: Implications for the study of complex craters

Meteoritics &Planetary Science, EarlyView.
Abstract We used Pluto's global digital elevation model to automatically perform a morphometric analysis of impact craters. Triangular irregular networks (TINs) were generated for each crater, providing a detailed representation of crater topography and enabling more accurate morpho‐structural analysis. A dedicated toolkit generated radial profiles for
N. de Campos, A. P. Crósta
wiley   +1 more source

Martian Dust Storm Spatial‐Temporal Analysis of Tentative Landing Areas for China's Tianwen‐3 Mars Mission

Earth and Space Science
China's first Mars sampling return mission (Tianwen‐3) is designed to launch and retrieve samples around 2030. Three tentative landing areas (TLAs) (Amazonis, Chryse and Utopia Planitiae, i.e., TLA‐A, TLA‐C and TLA‐U) are selected based on elevation
Yuan Tian, Bo Li, Zhaojin Rong, Shaojie Qu, Shengbo Chen   +4 more
doaj   +1 more source

Origin and formation of a chondritic xenolith in Krymka (LL3.2, breccia): Indications for a late formation of the accretionary breccia

Meteoritics &Planetary Science, EarlyView.
Abstract An unusual chondritic xenolith was found in two sequentially prepared thin sections of a sample from the Krymka (LL3.2) chondrite. The xenolith has a rounded, slightly deformed shape of about 5 mm in apparent diameter and is partially surrounded by a double rim made of an inner fine‐grained silicate‐rich rim and an outer sulfide‐rich rim.
Aelita Girich, Addi Bischoff, Samuel Ebert, Kazuhide Nagashima, Andreas Morlok, Harald Hiesinger, Jasper Berndt   +6 more
wiley   +1 more source

Nanoscale space weathering features in mature lunar soil revealed by TEM and APT

Meteoritics &Planetary Science, EarlyView.
Abstract Space weathering significantly alters the optical, chemical, and structural properties of lunar regolith at micro‐ and nanoscales; yet detailed nanoscale variability within individual soils remains underexplored. Here we apply transmission electron microscopy (TEM) and atom probe tomography to four mineral grains (olivine, ilmenite, and two ...
Jennika Greer, Alexander M. Kling, Luke Daly, Dieter Isheim, David N. Seidman, Michelle S. Thompson, Philipp R. Heck   +6 more
wiley   +1 more source

Astronomy (OpenStax) [PDF]

1. Science and the Universe: A Brief Tour2. Observing the Sky: The Birth of Astronomy3. Orbits and Gravity4. Earth, Moon, and Sky5. Radiation and Spectra6. Astronomical Instruments7. Other Worlds: An Introduction to the Solar System8. Earth as a Planet9.
Fraknoi, Andrew, Wolff, Sidney C., Morrison, David   +2 more
core  

Molecular hydrogen in galaxies [PDF]

, 1987
This study aims to understand the key role played by molecular hydrogen in the evolution of galaxies, with a view to constraining its radial distribution in the Galaxy and the CO→H(_2) conversion factor α(_20).The star formation rate is shown to be ...
Wilkinson, David Adam, Wilkinson, D.A
core  

The DECam Ecliptic Exploration Project (DEEP). V. The Absolute Magnitude Distribution of the Cold Classical Kuiper Belt

The Planetary Science Journal
The DECam Ecliptic Exploration Project (DEEP) is a deep survey of the trans-Neptunian solar system being carried out on the 4 m Blanco telescope at the Cerro Tololo Inter-American Observatory in Chile using the Dark Energy Camera (DECam).
Kevin J. Napier, Hsing Wen Lin, David W. Gerdes, Fred C. Adams, Anna M. Simpson, Matthew W. Porter, Katherine G. Weber, Larissa Markwardt, Gabriel Gowman, Hayden Smotherman, Pedro H. Bernardinelli, Mario Jurić, Andrew J. Connolly, J. Bryce Kalmbach, Stephen K. N. Portillo, David E. Trilling, Ryder Strauss, William J. Oldroyd, Chadwick A. Trujillo, Colin Orion Chandler, Matthew J. Holman, Hilke E. Schlichting, Andrew McNeill   +22 more
doaj   +1 more source

A STEAM approach supported by the meaningful learning theory to teach the solar system in lower secondary education (9th grade)

Frontiers in Education
This article presents an innovative interdisciplinary approach to teaching the solar system in lower secondary education (9th grade), grounded in David Ausubel’s Meaningful Learning Theory and the STEAM (Science, Technology, Engineering, Arts, and ...
Michel Corci Batista, Ivana Kelly Cintra Reinisz, Taisy Fernandes Vieira, Ederson Carlos Gomes, Oscar Rodrigues dos Santos, Olavo Leopoldino da Silva Filho, Marcello Ferreira   +6 more
doaj   +1 more source

Encyclopedia of the solar system [PDF]

, 2014
The Encyclopedia of the Solar System, Third Edition-winner of the 2015 PROSE Award in Cosmology & Astronomy from the Association of American Publishers-provides a framework for understanding the origin and evolution of the solar system, historical ...
Johnson, Torrence, Breuer, Doris, Spohn, Tilman   +2 more
core  

Potassium isotopic compositions and exposure ages of evolved and silica‐rich achondrites

Meteoritics &Planetary Science, EarlyView.
Abstract Some of the oldest igneous rocks in the Solar System include evolved and silica‐rich achondrites that originate from parent bodies less than 1000 km in diameter, referred to as planetesimals. While Earth was initially in a molten state and required continental crust formation and plate tectonics to generate andesite bulk compositions, evolved ...
Z. Vaci, Z. Tian, P. Koefoed, M. Habermann, M. Humayun, K. Ziegler, H. Busemann, D. Krietsch, J. M. D. Day, K. Wang   +9 more
wiley   +1 more source