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There have been seven Apollo missions to the moon, with the last one in 1972. No humans have been to the moon since, but there have been unmanned missions. There is an estimated 400,000 pounds of man-made waste on the moon, including astronaut trash and memorabilia. Neil Armstrong and Buzz Aldrin were the first to land on the moon, and the Apollo 12 crew survived two lightning strikes. The first lunar rover was used by the Apollo 15 crew.
Since NASA’s iconic Apollo 11 mission, which marked the first human moon landing in 1969, there have been six more Apollo missions to the moon. With the exception of Apollo 13, which had to make a quick emergency return, two astronauts landed on the moon on each of the Apollo 11-17 missions. The last Apollo mission was completed in 1972, and as of 2015, no humans have set foot on the moon since. There have however been numerous probes, unmanned robots and rockets sent to the moon. In addition to leaving behind some predictable items like lunar rovers, the Apollo astronauts left behind a total of 50 tons of trash. When we factor in the additional debris from crashing probes and rockets, there are an estimated 400,000 pounds (181,437 kilograms) of man-made waste on the moon. The litter and debris includes astronaut trash such as empty food parcels and human waste, as well as memorabilia such as a replica golden olive branch and 12 pairs of boots.
Read more about lunar missions:
The first two astronauts to land on the moon were Neil Armstrong and Buzz Aldrin, aboard Apollo 11.
The Apollo 12 crew was struck by two lightning strikes after launch, but were able to recover their systems and land on the moon four days later.
The first lunar rover was used by the Apollo 15 crew in 1971.
