Balmer

Rarity: Common

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At a glance

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Place

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Science and technology

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What Wikipedia says

Balmer is the basalt-covered remains of a lunar impact feature. Only the heavily worn southern and eastern sections of the outer wall still survive; the remainder being overlaid by a basalt flow that joins to the nearby mare. It forms part of the larger structure called the Balmer-Kapteyn Basin.

Excerpt from the Wikipedia article “Balmer (crater)”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: NASA, Public domain, via Wikimedia Commons.