Gas eruptions likely formed new Moon features

The gas likely burst forth as little as one million to ten million years ago.

That would make the features relatively young, since any time less than ten million years ago is "like yesterday" in comparison to the moon's age, said Peter H. Schultz, a planetary geologist at Brown University in Providence, Rhode Island, and lead study author.

The finding could prove that the moon is still an active body, countering the long-standing belief that there has been no major lunar volcanism in the past three billion years.