Rynin is a
lunar impact crater
An impact crater is a circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact crater ...
that is located just behind the northwestern limb, on the
far side
''The Far Side'' is a single-panel comic created by Gary Larson and syndicated by Chronicle Features and then Universal Press Syndicate, which ran from December 31, 1979, to January 1, 1995 (when Larson retired as a cartoonist). Its surrealisti ...
of the
Moon
The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width ...
. It is located just to the east of the larger crater
Stefan
Stefan may refer to:
* Stefan (given name)
* Stefan (surname)
* Ștefan, a Romanian given name and a surname
* Štefan, a Slavic given name and surname
* Stefan (footballer) (born 1988), Brazilian footballer
* Stefan Heym, pseudonym of German writ ...
, and to the southwest of
Chapman.
This is an older lunar crater with an outer rim that has been worn and rounded due to impact erosion. The edge remains relatively well-defined around most of the perimeter, but it is overlain by several smaller craters. Along the eastern side is a long, dagger-shaped gash that cuts through the rim and inner wall to reach the interior floor. This gash is connected to a crater formation just outside the eastern edge of Rynin. A shelf of slumped material runs along the inner wall northward.
The western section of the interior floor of Rynin is occupied by a smaller crater, which stretches from the base of the inner wall to almost the midpoint of Rynin. There are smaller impacts across the otherwise relatively level interior floor, including three along the southern inner wall.
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Impact craters on the Moon