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Research may solve Moon’s volcanic fire-fountain mystery

Tiny beads of volcanic glass found on the lunar surface during the Apollo missions are a sign that fire fountain eruptions took place on the Moon’s surface. Now, scientists have identified the volatile gas that drove those eruptions. If volatile reservoirs on the Earth and Moon do indeed share a common source, it has implications for understanding the Moon’s origin.

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Crashing comets may explain mysterious lunar swirls

Lunar swirls have been the source of debate for years. The twisting, swirling streaks of bright soil stretch, in some cases, for thousands of miles across the Moon’s surface. Brown University researchers have produced new evidence that they were created by several comet collisions over the last 100 million years.