Today, the moon is about as inhospitable to life as it gets. The little water thatâ€™s there is trapped in ice or rock. Itâ€™s otherwise dry and airless, fluctuating in temperature by hundreds of degrees anywhere the sun shines. But long ago? Thatâ€™s an entirely different story.
New research published in Astrobiology suggests that the moon may have been shockingly habitable in the past during at least two periods â€” shortly after the moon formed, and when volcanic activity was at its highest.