 LRO image | |
| Coordinates | 53°18′S151°06′W / 53.3°S 151.1°W Coordinates: 53°18′S151°06′W / 53.3°S 151.1°W |
|---|---|
| Diameter | 55 km |
| Depth | Unknown |
| Colongitude | 153° at sunrise |
| Eponym | Fernand Baldet |
Baldet is a lunar impact crater that is located on the southern hemisphere on the far side of the Moon. It lies in the lava-flooded region between the craters Cori to the north, Stoney to the southwest, and the worn walled plain Minkowski to the southeast.
Lunar craters are impact craters on Earth's Moon. The Moon's surface has many craters, almost all of which were formed by impacts.
An impact crater is an approximately circular depression in the surface of a planet, moon, or other solid body in the Solar System or elsewhere, formed by the hypervelocity impact of a smaller body. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Impact craters range from small, simple, bowl-shaped depressions to large, complex, multi-ringed impact basins. Meteor Crater is a well-known example of a small impact crater on Earth.
A sphere is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball.
The rim of Baldet is low and worn, but generally retains its original circular shape. There is a slight outward bulge along the northwest rim, and the western interior wall is wider than elsewhere.
The flat, nearly featureless interior has been flooded by lava, and has a lower albedo than the surroundings giving is a darker hue. A smaller crater has broken into the eastern rim, leaving a gap where the two craters intersect that has been covered in lava. A similar-sized ghost crater lies just inside the northern rim, producing a raised ring in the crater surface. Another such formation lies just outside the southern rim of Baldet.
Albedo is the measure of the diffuse reflection of solar radiation out of the total solar radiation received by an astronomical body. It is dimensionless and measured on a scale from 0 to 1.
In textual studies, a palimpsest is a manuscript page, either from a scroll or a book, from which the text has been scraped or washed off so that the page can be reused for another document. Pergamene was made of lamb, calf, or goat kid skin and was expensive and not readily available, so in the interest of economy a pergamene often was re-used by scraping the previous writing. In colloquial usage, the term palimpsest is also used in architecture, archaeology, and geomorphology to denote an object made or worked upon for one purpose and later reused for another, for example a monumental brass the reverse blank side of which has been re-engraved.
