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When Neil Armstrong took the first photograph after stepping onto the Moon’s surface on July 20, 1969, the image happened to capture something unusual: a strange white bag lying on the gray, dusty ground.
It was not a tool. It was not a scientific instrument. For years, space conspiracy theorists speculated about what it might have been, but the most reasonable explanation was also the least pleasant one.
It may have contained… human waste.
That would sound like a joke if it were not backed up by credible sources. The Guardian, for example, noted that the Apollo landing sites were left with “96 bags of feces, urine and vomit,” which scientists later became very interested in. The Royal Museums Greenwich states it even more directly: “There are 96 bags of human waste on the Moon,” making it clear that these bags were indeed abandoned on the lunar surface. Other publications have mentioned the same fact, and a Wired article about waste management in space said that “the Apollo missions left 96 bags of urine and feces on the Moon’s surface,” describing it as one of the more awkward legacies of space exploration.
So how did this happen?
During the Apollo program, comfort in space was practically nonexistent. There were no toilets in the ordinary sense aboard the spacecraft. Instead, astronauts used what were known as fecal collection bags, simple polyethylene bags that were attached to the body with adhesive tape. After use, the bags were sealed. But because the system was far from perfect, leaks and unpleasant incidents were almost impossible to avoid.
One of the best-known examples happened during Apollo 10. Six days after launch, commander Tom Stafford noticed a brown object floating around in zero gravity and shouted, “Give me a napkin, quick. There’s a turd floating through the air!” That bizarre moment was recorded in NASA’s Apollo 10 mission transcript.
Across the six crewed Moon landings between 1969 and 1972, astronauts dumped a total of 96 of these waste bags onto the lunar surface. The reason was entirely practical. They needed to free up space and reduce weight so they could bring back containers filled with dozens of kilograms of Moon rocks.
According to Jack Burns, an astrophysicist at the University of Colorado Boulder, all of it is still there today. There is no wind on the Moon, no rain, and no bacteria to break anything down. That means the bags and everything inside them have effectively become a kind of time capsule.
Now, astrobiologists have started taking an interest in these unlikely leftovers as well. Their main question is whether Earth microbes could survive the Moon’s brutal conditions: temperatures dropping to around -173°C at night and rising to 127°C during the day, with no atmosphere and intense radiation.
If scientists were to find microbes that remained intact, or perhaps even alive, inside 50-year-old lunar waste bags, it would be a major breakthrough in the study of how life begins and spreads. Such a discovery would support the idea of panspermia, the theory that life can travel between planets by hitching a ride on meteorites or other debris moving through space.
That raises an obvious question: will NASA or a private mission ever try to bring these bags back to Earth?
For astrobiologists, they are now priceless samples, preserved for more than half a century in near-vacuum conditions. Analyzing what is inside could reveal how bacteria change during extreme long-term isolation and might help answer one of science’s biggest questions: can life survive interplanetary travel?
The irony is hard to miss. The astronauts threw the bags away simply to make room for Moon rocks. There was no scientific purpose behind it at the time. But decades later, that discarded waste may have become an unexpectedly valuable research resource.
According to NASA, the waste bags are not the only unusual objects left on the Moon. The lunar surface also holds an American flag, two golf balls, a golden olive branch, and several personal mementos from astronauts. Today, all of it can be thought of as a strange kind of museum collection sitting 384,000 kilometers from Earth.
It was not a tool. It was not a scientific instrument. For years, space conspiracy theorists speculated about what it might have been, but the most reasonable explanation was also the least pleasant one.
It may have contained… human waste.
That would sound like a joke if it were not backed up by credible sources. The Guardian, for example, noted that the Apollo landing sites were left with “96 bags of feces, urine and vomit,” which scientists later became very interested in. The Royal Museums Greenwich states it even more directly: “There are 96 bags of human waste on the Moon,” making it clear that these bags were indeed abandoned on the lunar surface. Other publications have mentioned the same fact, and a Wired article about waste management in space said that “the Apollo missions left 96 bags of urine and feces on the Moon’s surface,” describing it as one of the more awkward legacies of space exploration.
So how did this happen?
During the Apollo program, comfort in space was practically nonexistent. There were no toilets in the ordinary sense aboard the spacecraft. Instead, astronauts used what were known as fecal collection bags, simple polyethylene bags that were attached to the body with adhesive tape. After use, the bags were sealed. But because the system was far from perfect, leaks and unpleasant incidents were almost impossible to avoid.
One of the best-known examples happened during Apollo 10. Six days after launch, commander Tom Stafford noticed a brown object floating around in zero gravity and shouted, “Give me a napkin, quick. There’s a turd floating through the air!” That bizarre moment was recorded in NASA’s Apollo 10 mission transcript.
Across the six crewed Moon landings between 1969 and 1972, astronauts dumped a total of 96 of these waste bags onto the lunar surface. The reason was entirely practical. They needed to free up space and reduce weight so they could bring back containers filled with dozens of kilograms of Moon rocks.
According to Jack Burns, an astrophysicist at the University of Colorado Boulder, all of it is still there today. There is no wind on the Moon, no rain, and no bacteria to break anything down. That means the bags and everything inside them have effectively become a kind of time capsule.
Now, astrobiologists have started taking an interest in these unlikely leftovers as well. Their main question is whether Earth microbes could survive the Moon’s brutal conditions: temperatures dropping to around -173°C at night and rising to 127°C during the day, with no atmosphere and intense radiation.
If scientists were to find microbes that remained intact, or perhaps even alive, inside 50-year-old lunar waste bags, it would be a major breakthrough in the study of how life begins and spreads. Such a discovery would support the idea of panspermia, the theory that life can travel between planets by hitching a ride on meteorites or other debris moving through space.
That raises an obvious question: will NASA or a private mission ever try to bring these bags back to Earth?
For astrobiologists, they are now priceless samples, preserved for more than half a century in near-vacuum conditions. Analyzing what is inside could reveal how bacteria change during extreme long-term isolation and might help answer one of science’s biggest questions: can life survive interplanetary travel?
The irony is hard to miss. The astronauts threw the bags away simply to make room for Moon rocks. There was no scientific purpose behind it at the time. But decades later, that discarded waste may have become an unexpectedly valuable research resource.
According to NASA, the waste bags are not the only unusual objects left on the Moon. The lunar surface also holds an American flag, two golf balls, a golden olive branch, and several personal mementos from astronauts. Today, all of it can be thought of as a strange kind of museum collection sitting 384,000 kilometers from Earth.
