Van den Bos (crater)
Encyclopedia
Van den Bos is a small lunar
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

 crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...

 that is joined to the south-southwestern outer rim of the slightly larger crater Tamm
Tamm (crater)
Tamm is a shallow lunar impact crater. It is located to the west-northwest of the much larger and more prominent crater Chaplygin. Attached to the south-southwestern outer rim of Tamm is the smaller van den Bos. There is a gap in the southern rim where these two craters are joined together.The rim...

. About one crater diameter to the west is Vil'ev
Vil'ev (crater)
Vil'ev is an eroded lunar crater that is located on the far side of the Moon. It lies to the west of the much larger crater Chaplygin, and to the north of Marconi. Just to the northeast of Vil'ev is the small crater pair of van den Bos and Tamm...

. Farther away to the east is the prominent Chaplygin
Chaplygin (crater)
Chaplygin is a large lunar impact crater that lies on the far side of the Moon. It is located to the southeast of the huge walled plain Mendeleev, about mid-way between the craters Schliemann to the northeast and Marconi to the southwest. It is about the same size as Albategnius on the near...

, and to the south-southwest lies Marconi
Marconi (crater)
Marconi is a lunar impact crater that is located on the Moon's far side. It lies to the northwest of the large walled plain Gagarin, and to the southwest of the prominent crater Chaplygin. To the west-northwest of Marconi is the slightly larger Dellinger....

. van den Bos is located on the far side of the Moon
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

 and cannot be viewed directly from the Earth
Earth
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...

.

This is a shallow crater formation with some wear along its rim. It has nearly merged with the neighboring Tamm, and the length of the common rim is almost two-thirds the diameter of van den Bos. The interior floor has a series of rille
Rille
Rille is typically used to describe any of the long, narrow depressions in the lunar surface that resemble channels. Typically a rille can be up to several kilometers wide and hundreds of kilometers in length...

s across the surface. These are usually formed by cooling sheets of basalt
Basalt
Basalt is a common extrusive volcanic rock. It is usually grey to black and fine-grained due to rapid cooling of lava at the surface of a planet. It may be porphyritic containing larger crystals in a fine matrix, or vesicular, or frothy scoria. Unweathered basalt is black or grey...

ic lava
Lava
Lava refers both to molten rock expelled by a volcano during an eruption and the resulting rock after solidification and cooling. This molten rock is formed in the interior of some planets, including Earth, and some of their satellites. When first erupted from a volcanic vent, lava is a liquid at...

.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK