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Researchers uncover the truth about the Moon's orange glass beads
How It Works UK
|Issue 205
When the Apollo astronauts first set foot on the lunar surface, they expected to find grey rocks and dust. What they didn't anticipate was discovering something that looked almost magical - tiny, brilliant orange glass beads scattered across the Moon's landscape like microscopic gems. These beads, each smaller than a grain of sand, are actually ancient time capsules from when the Moon was volcanically active billions of years ago. The beads formed some 3.3 to 3.6 billion years ago during volcanic eruptions on the surface of the then-young satellite.
The story of these glass beads begins with explosive volcanic activity that would have been spectacular to witness. The beads formed when lunar volcanoes shot material from the interior to the surface, where each drop of lava solidified instantly in the cold vacuum that surrounds the Moon. Picture volcanic eruptions similar to Hawaii's famous lava fountains, but happening in the airless environment of space.
This story is from the Issue 205 edition of How It Works UK.
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