Circular unless hit very hard
craters... :)
Polyhedrons
Most lunar craters are impact craters caused by incoming meteors and asteroids. Since our moon has no atmosphere there can be no glaciers or erosion.
Yes, there are detailed maps of lunar craters available. Scientists and organizations like NASA have created high-resolution maps of the Moon's surface, including its craters, using data from spacecraft missions. These maps provide valuable information for lunar exploration and research.
Yes, lunar mares are younger than the craters that formed in them. Lunar mares are vast, flat areas filled with solidified lava flows, while craters are formed by impacts from meteoroids. The dark-colored mare areas are generally younger because they filled in older, pre-existing craters.
All impact craters are circular, no matter what the shape of the impactor or the angle of impact. Of the options provided in the Discussion page, only choice "B" is accurate. The energy released in the impact melted the impactor - and the surface - to the point of being fluid, or at least malleable. Option "D", that the craters were formed early in the Moon's history, is probably also true, but the circular shape of the craters isn't dependent on this.
The majority of lunar craters are thought to be formed from impacts by asteroids or comets. These impacts create depressions on the Moon's surface, resulting in the variety of craters we see today.
Lunar craters are typically circular or bowl-shaped due to the impact of meteoroids hitting the surface of the Moon. The size of the crater can range from small to large, with some displaying central peaks or terraced walls. Over time, erosion and other geological processes can alter the original shape of the crater.
it is a result of an asteroid impact
Craters are formed when asteroids and comets collide with the lunar surface.
Lunar craters can last for billions of years, as they are formed by impacts from meteors and asteroids which are infrequent occurrences. The lack of weathering and erosion on the Moon preserves these craters for extended periods of time.
Naosuke Sekiguchi has written: 'Catalogue of central peaks and floor objects of the lunar craters on the visible hemisphere' -- subject(s): Lunar craters