For the first time, researchers used a technique to look at individual atoms in a single grain of moon dust from an Apollo 17 moon sample.
Although the moon is conveniently close for observations, astronauts haven't stepped on the lunar surface since 1972.
Fortunately, this will change in the future when NASA's Artemis program lands the first woman and next man on the moon by 2024. In the meantime, that makes lunar samples returned by Apollo astronauts a rare and precious commodity. Considering that astronauts Gene Cernan and Harrison Schmitt returned 245 pounds of lunar rocks and soil to Earth after their 1972 mission, studying one dust grain at a time would definitely help conserve samples.
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