noun🔗ShareA large, dark plain, which may have the appearance of a sea."From Earth, we could observe maria, the dark, ancient lava plains on the Moon, with just a pair of binoculars. "astronomygeologyspaceChat with AIVocabulary GamePractice Reading
noun🔗ShareOn Saturn's moon Titan, a large expanse of what is thought to be liquid hydrocarbons."Scientists hope to learn more about the composition of Ligeia Mare, a maria on Titan filled with liquid methane. "astronomyspacegeologysubstanceChat with AIVocabulary GamePractice Reading
