Facts for Prelims (FFP)
Source: TOI
Context: A recent study using crystals brought back by Apollo astronauts in 1972 has revealed that the Moon is approximately 40 million years older than previously believed.
- The research used these lunar crystals to pinpoint the Moon’s formation age, revising it to a minimum of 4.46 billion years old.
- These crystals, which are the oldest known solids to form after a massive impact, serve as a reference point for lunar chronology.
- The study utilized an analytical method called atom probe tomography to determine the age of the crystals and revealed that the Moon is indeed at least 4.46 billion years old.
Significance:
This information is crucial for understanding the Moon’s role in stabilizing Earth’s rotational axis and affecting tides, which, in turn, has influenced life on Earth.
