NASA is hunting for a hidden cave on the moon that could shelter future astronauts

When you buy through links on our articles, Future and its syndication partners may earn a commission. The Marius Hills Pit on the lunar surface.| Credit: NASA/GSFC/Arizona State University
Are there secret underground caves on the moon? NASA has a new program that aims to find out. Though we see it in the sky most nights, the moon still holds an incredible amount of mystery. One such mystery is a large underground cave, or a cavernous tube carved out by ancient lava, that scientists think exten