Mare Fecunditatis (the "Sea of Fecundity" or "Sea of Fertility") is a lunar mare 909 km in diameter. The Fecuditatis basin formed in the Pre-Nectarian epoch, while the basin material surrounding the mare is of the Nectarian epoch. The mare material is of the Upper Imbrian epoch and is relatively thin compared to Mare Crisium or Mare Tranquillitatis. This basin is overlapped with the Nectaris, Tranquillitatis, and Crisium basins. Fecunditatis basin meets Nectaris basin along Fecunditatis' western edge, with the area along this zone faulted by arcuated grabens. On the eastern edge of Fecunditatis is the crater Langrenus. Near the center lie the interesting craters Messier A and B. The Lunar maria (singular: mare, IPA: //) are large, dark, basaltic plains on Earths Moon, formed by ancient volcanic eruptions. ... The Pre-Nectarian Period of the lunar geologic timescale runs from 4550 million years ago (the time of the initial formation of the Moon) to 3920 million years ago, when the Nectaris Basin was formed by a large impact. ... A division of geologic time less than a period and greater than an age. ... The Nectarian Period of the lunar geologic timescale runs from 3920 million years ago to 3850 million years ago. ... In the Lunar geologic timescale, the Upper Imbrian epoch occurred between 3800 million years ago to about 3200 million years ago. ... Mare Crisium Studios is also the name of a company formed to develop the game Stars! Supernova Genesis. ... The Sea of Tranquility of the Moon. ... USGS image A graben is a depressed block of land bordered by parallel faults. ... Tycho crater on Earths moon. ... Langrenus is a prominent impact crater located near the eastern lunar limb. ... Messier is a relatively young lunar impact crater located on the Mare Fecunditatis. ...

Sinus Successus

Along the eastern edge of the mare is an outward bulge that forms a type of bay. This feature has been given the name Sinus Successus (latin for "Bay of Success"). The selenographic coordinates of Sinus Successus are 0.9° N, 59.0° E, and the diameter is 132 km. Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... See Cartesian coordinate system or Coordinates (elementary mathematics) for a more elementary introduction to this topic. ...

Along the eastern edge of the bay is the flooded Condon crater, and Webb crater forms the southern end of the area. There are no other features of significance on the bay. However the terrain just to the northwest of Sinus Successus was the landing site for the Soviet Luna 18 and Luna 20 probes. Condon is a lunar crater that lies on the eastern shore of the Sinus Successus, a bay along the northeast edge of Mare Fecunditatis. ... Webb is a small lunar impact crater that is located near the eastern edge of the Mare Fecunditatis, in the eastern part of the Moon near the equator. ... Soviet redirects here. ... Luna 18 was an unmanned space mission of the Luna program, also called Lunik 18. ... Luna 20 was an unmanned space mission of the Luna program, also called Lunik 20. ...