A striking black and white image of the Mare Orientale impact basin on the Moon's western edge, captured by NASA's Lunar Orbiter 4 in 1967. The photo showcases the basin's three concentric rings, formed by an ancient asteroid impact over 3 billion years ago. The dark, smooth mare (Latin for sea) is a result of molten lava flooding the impact site.
Astronomy Picture from 23/11/2002
Mare Orientale
Source: https://apod.nasa.gov/apod/ap021123.html
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