In a breakthrough discovery, NASA scientists have found volatile compounds that caused fire fountains on the ancient moon's surface. Yes, the moon once had lava fountain eruptions, similar to the ones we see today in Iceland and Hawaii. Findings of the study were published in the journal Nature Geoscience. Carbon monoxide drove fire fountains Fire fountains occur when volatile compounds get mixed in with erupting lava. The volatiles turn into gas as the lava rises from the depth, said Alberto Saal of Brown University and co-author of the study. NASA said the expansion of gases caused lava to blast into the air soon... More