Results 21 to 30 of about 8,311,841 (367)
Remote Sensing, 2021 Impact craters are the most prominent features on the surface of the Moon, Mars, and Mercury. They play an essential role in constructing lunar bases, the dating of Mars and Mercury, and the surface exploration of other celestial bodies.
Yutong Jia +7 more
semanticscholar +1 more source
Formation of Simple Impact Craters in Layered Targets: Implications for Lunar Crater Morphology and Regolith Thickness [PDF]
Journal of Geophysical Research: Planets, 2018 Impact crater morphologies vary significantly across the lunar maria. Craters with diameter less than 400 m are closely related to variations in target properties (rock strength, porosity, and layering) as well as the impact velocity. Here we investigate
Nils C. Prieur +3 more
openalex +2 more sources
An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime
Science, 2020 Blowing a crater in asteroid Ryugu The Hayabusa2 spacecraft was designed to collect samples from the nearby asteroid (162173) Ryugu and return them to Earth for laboratory analysis. Arakawa et al. describe how the spacecraft's Small Carry-on Impactor was
M. Arakawa +67 more
semanticscholar +1 more source
Scientific African, 2023 Impact cratering is an important aspect of planetary evolution. Geophysics plays a complementary role in identifying impact craters on Earth given the non-unique geological characteristics associated with such craters. The Bosumtwi impact crater in Ghana
Cyril D. Boateng +3 more
doaj +1 more source
Depth of Cracking beneath Impact Craters: New Constraint for Impact Velocity [PDF]
, 2002 Both small-scale impact craters in the laboratory and less than 5 km in diameter bowl-shaped craters on the Earth are strength (of rock) controlled. In the strength regime, crater volumes are nearly proportional to impactor kinetic energy.
Ahrens, Thomas J. +2 more
core +1 more source
Scientific Reports, 2022 Bullet impacts are a ubiquitous form of damage to the built environment resulting from armed conflicts. Bullet impacts into stone buildings result in surficial cratering, fracturing, and changes to material properties, such as permeability and surface ...
Oliver Campbell +3 more
doaj +1 more source
Expectations for the Deep Impact collision from cometary nuclei modelling [PDF]
, 2005 Using the cometary nucleus model developed by Espinasse et al. (1991), we calculate the thermodynamical evolution of Comet 9P/Tempel 1 over a period of 360 years.
Klinger, Jurgen +3 more
core +6 more sources
Automatic Mapping of Small Lunar Impact Craters Using LRO‐NAC Images
Earth and Space Science, 2022 Impact craters are the most common feature on the Moon’s surface. Crater size–frequency distributions provide critical insight into the timing of geological events, surface erosion rates, and impact fluxes.
J. H. Fairweather +5 more
doaj +1 more source
Applied Sciences, 2020 Impact cratering experiments were performed on semi-infinite concrete targets with 7 mm-diameter 40CrNiMo steel long-rod projectiles at impact velocities ranging from 2117 m/s to 3086 m/s by using a two-stage combustion light-gas gun.
Yangyu Lu +6 more
doaj +1 more source
The self‐secondary crater population of the Hokusai crater on Mercury
Geophysical Research Letters, 2016 Whether or not self‐secondaries dominate small crater populations on continuous ejecta deposits and floors of fresh impact craters has long been a controversy. This issue potentially affects the age determination technique using crater statistics.
Zhiyong Xiao +2 more
doaj +1 more source