Did Lava once flowed on the surface of the moon?

Yes, lava once flowed on the surface of the Moon, primarily during its early geological history. This volcanic activity led to the formation of vast, flat plains known as lunar maria, which are composed of basalt. Evidence of past lava flows can be seen in the Moon's surface features, such as large craters and smooth areas that indicate extensive volcanic activity. However, the Moon is currently considered geologically inactive with no ongoing volcanic eruptions.