May 21, 2026
Before a person first landed on the Moon, some scientists believed that the dust of the lunar surface might be thick enough to swallow up anyone who walked on it. While this didn’t happen, moon dust can be a problem for astronauts. Breathing in moon dust can cause respiratory irritation known as “lunar hay fever.”
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How Many People Have Been to the Moon?
Even if you weren’t alive for the first Moon landing on July 20, 1969, you’ve probably seen footage of it, when astronaut Neil Armstrong famously declared, “That’s one small step for [a] man, one giant leap for mankind,” and Buzz Aldrin helped him plant an American flag on the lunar surface. And
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