**5. Conclusions**

Anorthosites are very much interested by geologists because they give us great information about Earth history and how it was evolved. They are able to be classified as Archean-age anorthosites, Proterozoic anorthosite in the Earth and Lunar anorthosites which are constituted the light-colored areas of the Moon's surface.

Petrologists try to find good information about the conditions of igneous rock formation by study them and anorthosites (As an igneous rock which are dominantly contained Plagioclase minerals) are good rocks in this regard to find out more than about early history and how other extraterrestrial bodies like the Moon get formed.

It seems that the light-colored areas got formed by the crystallization and floatation of plagioclase from a global magma ocean with a significant chemical heterogeneity. Furthermore, the Earth was remarkably hotter than to day in the Archean (4 to 2.5 billion years ago) and the Proterozoic (2.5–0.5 billion years ago) nearly three and two times as today, respectively. The Archean anorthosites are more than as lenses within other Archean rocks due to high mantle temperature at this time and let more differentiation and stratification to produce cumulates. Furthermore, Proterozoic anorthosite are massif-type anorthosite which are the most abundant type of anorthosite on Earth. So, it can be assumed that these volcanic activities at the Precambrian probably had great role in The Cambrian explosion. Definitely, these studies will help scientists to make a better planetary formation model to study extraterrestrial bodies within the solar system or other star systems through the galaxy, or even in astrobiology studies.

Future works should be focusing on the detection of these ideas to confirm or on contrary suggesting new ideas. Definitely, by considering new astro -geological studies like the Moon, our knowledge about the earth early condition and developing planetary formation modeling will be remarkably developed as an important science to study in the space exploration era.
