description Apollo 11 Moon Rocks Overview
The Apollo 11 lunar samples were rocks and soil collected by Neil Armstrong and Buzz Aldrin at Tranquility Base in July 1969. They were the first geological material deliberately gathered on another celestial body and returned to Earth for laboratory analysis. The collection includes volcanic basalts, impact-produced breccias, and fine regolith, which researchers have used to investigate lunar chronology, volcanism, surface exposure, and impact history.
help Apollo 11 Moon Rocks FAQ
How much lunar material did Apollo 11 bring back?
Apollo 11 returned about 21.5 kilograms of lunar rocks, soil, and core samples to Earth. Neil Armstrong and Buzz Aldrin collected them during their 1969 surface excursion in Mare Tranquillitatis.
What did scientists learn from the Apollo 11 rocks?
The samples included ancient volcanic basalts, showing that lava once flooded parts of the Moon's surface. Their ages and chemistry also helped scientists reconstruct the early history of the Earth-Moon system.
Why are some Apollo 11 samples still unopened?
NASA preserved portions under controlled conditions so future scientists could study them with techniques unavailable in 1969. This policy protects a limited collection from contamination and unnecessary consumption.
Where can the public see Apollo 11 moon rocks?
Apollo samples are displayed at institutions including the Smithsonian National Air and Space Museum in Washington, D.C. Small goodwill samples were also presented to countries and U.S. states after the mission.
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