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They are impact basins that have been flooded with (once-molten) lunar basaltic lavas, which are naturally dark in color.

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What is the dark areas on moons surface called?

The Lunar plains are referred to as Maria (Latin for seas .) because ancient observers thought them to be water like Earth's own oceans .


What are the lunar landforms that were originally thought to be calm seas?

The lunar landforms that were originally thought to be calm seas are called "maria." These flat, dark areas on the Moon's surface were initially mistaken for bodies of water by early astronomers. Maria are actually ancient volcanic plains created by lava flows billions of years ago.


What do lunar maria look like?

A maria looks like a dark, flat region


How do the dark spots on the moon form?

They thought they were lunar "seas" like the oceans on earth. They are actually vast plains. But even today, they are still called "seas".Many early astronomers thought the dark spots on the moon were "seas". That is how all the lunar maria got their name, such as "Mare Tranquillitatis" which translates into "The Sea of Tranquility".


What is maria on moon made of?

The lunar maria are large, dark, basaltic plains, formed by ancient volcanic eruptions


A 'sea' on the moon is called a?

Maria. The dark patches on the moon were once thought to be seas and are called maria (Latin for `seas`). These are not actual seas containing water but are plains formed by ancient volcanic eruptions on the lunar surface. -RoryHem


Dark-colored, relatively flat regions of the moon's surface that were formed when interior lava filled large basins are called?

The dark-colored, relatively flat regions of the moon's surface that were formed when interior lava filled large basins are called lunar maria. These areas appear darker than the surrounding highlands due to their lower reflectivity and lack of craters. The lunar maria are thought to have formed from ancient volcanic activity on the moon.


What are dark places on the moon called?

Dark places on the moon are called lunar maria, which are large, flat, dark-colored basaltic plains formed by ancient volcanic activity. These areas contrast with the brighter highlands on the moon's surface.


What are the dark areas of the moon?

The dark areas on the moon are known as maria, which are large, flat regions filled with solidified lava from ancient volcanic activity. These areas appear darker than the surrounding highlands due to their composition and lack of craters.


What are the flat areas on the moon called?

Maria, or "seas", which is what "maria" means.


What maria on the surface of the moon look like and how they came to be known as maria.?

Maria are large, dark, basaltic plains on the moon. Galileo named these places 'maria' after the Latin word for sea because he thought they looked like oceans.


What formed when ancient lava reaches the moon and filled its craters?

The dark patches on the moon were once thought to be seas and are called maria (Latin for `seas`). These are not actual seas containing water but are plains formed by ancient volcanic eruptions on the lunar surface, lava.