New insights into the early bombardment history on Mercury

[unable to retrieve full-text content]Astronomers have studied the surface of Mercury to better understand if the plains were formed by volcanic flows or composed of material ejected from the planet's giant impact basins.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/~3/wPCmCa1MDwY/130705102102.htm

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