Apollo 15 astronauts found green glass beads on the Moon; decades later, they revealed evidence of water inside

Apollo 15 astronauts found unusual green flecks on the Moon's surface.

These flecks were later identified as volcanic glass beads containing trapped water.

Researchers discovered hydrogen within these tiny beads, proving lunar water existed.

This finding challenged the long-held belief that the Moon was extremely dry.

The discovery revealed significant water presence deep within the Moon's interior.