Facts about Apollo

1. 15

   Lunar dust samples from Apollo 11 contained olivine and plagioclase minerals, revealing that the Moon's composition differed significantly from Earth's mantle rocks despite similar formation theories.

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2. 14

   Each Apollo command module heat shield reached temperatures exceeding 5,000 degrees Fahrenheit during reentry through Earth's atmosphere, protected by an ablative material that vaporized to dissipate the extreme thermal energy.

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3. 13

   Retrorockets on the lunar module's ascent stage fired for 7 minutes 5 seconds during Apollo 17 in December 1972, achieving a rendezvous with the command module orbiting 60 nautical miles above the Moon.

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4. 12

   Michael Collins orbited the Moon 30 times alone in the command module during Apollo 11 while Armstrong and Aldrin descended to the surface in July 1969.

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5. 11

   Over 2.4 billion dollars was spent on the Apollo program between 1961 and 1972, equivalent to approximately 22 billion dollars in 2024 when adjusted for inflation.

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6. 10

   Twelve astronauts walked on the Moon across six Apollo missions, with Eugene Cernan being the last person to leave the lunar surface on December 14, 1972, during Apollo 17.

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7. 09

   Approximately 3,000 pounds of moon rocks and soil samples were collected across six Apollo landing missions between 1969 and 1972, with scientists still studying these specimens to understand lunar geology and the Moon's origin.

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8. 08

   Thirty-one of the 400,000 Apollo program workers died in the 1967 Apollo 1 cabin fire, prompting NASA to redesign the command module's hatch, wiring, and materials before returning to flight in 1968.

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9. 07

   Apollo 15 astronaut David Scott dropped a hammer and falcon feather simultaneously on the lunar surface in August 1971, and both objects fell at identical rates, proving Galileo's theory in the Moon's vacuum environment.

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10. 06

    Saturn V rockets launched 13 Apollo missions between 1967 and 1972, each standing 363 feet tall and weighing 6.2 million pounds at liftoff to escape Earth's gravity.

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11. 05

    Astronauts on Apollo missions wore watches synchronized to Mission Control in Houston, with Omega Speedmaster chronographs becoming the official NASA timepiece after passing extreme qualification tests in 1965.

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12. 04

    During Apollo 13's oxygen tank explosion on April 13, 1970, the lunar module's life support system was designed to sustain only two astronauts for 90 hours but successfully kept three crew members alive for 90 hours during their return to Earth.

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13. 03

    The 400,000 people who worked on Apollo 11 across NASA, contractors, and suppliers represented one of the largest coordinated efforts in human history to accomplish a single goal.

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14. 02

    Buzz Aldrin's spacesuit cost approximately 250,000 dollars in 1969, requiring 21 layers of material to protect against lunar temperature extremes ranging from minus 280 to plus 250 degrees Fahrenheit.

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15. 01

    In 1969, Apollo 11's lunar module descent engine burned for 1202 seconds, consuming 5,600 pounds of fuel to land Neil Armstrong and Buzz Aldrin on the Moon.

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