moon
It is on the moon.
moon
The dark flat areas found on the surface of the moon are called maria, which is the Latin word for "seas." They were formed by ancient volcanic activity and are lower in elevation than the surrounding highlands.
Maria (the plural of mare) look like a dark, flat regions.They're found on the moon and were created by volcanic eruptions.
Unlike the earth's moon, Mercury does not have maria.
it is found on the planet neptune
''Neptune'' is the planet with the The Great Dark Spot. But sometimes it can disappear so watch out for that.
Neptune
The dark smooth plains on the surface of the Moon are known as "maria" (singular: "mare"), which are large basaltic plains formed by ancient volcanic eruptions. These areas appear darker than the surrounding highlands due to their composition and smoother texture. The most well-known maria include the Sea of Tranquility (Mare Tranquillitatis) and the Sea of Serenity (Mare Serenitatis). The term "maria" is Latin for "seas," reflecting the early belief that these dark areas were actual bodies of water.
The lunar maria are smooth and dark regions found on the moon' surface. Maria cover approximately 17 percent of the lunar surface area.
A maria looks like a dark, flat region
the light areas of the moon are called the highlands. the dark areas are called maria.