KOMPAS.com – A form of human heritage when it arrived on the Moon is the astronauts' footprint when they arrive on the continent.
Exceptionally, when the US Space Agency (NASA) conducted an investigation into Moon orbit with the Lunar Reconnaissance Orbiter (LRO), they captured photos showing the footprints that were still there and were not erased.
This is in contrast to our footprints on Earth, which are easily erased. Of course, the NASA photo raises the question: would the astronaut's footprints last forever?
However, it turns out that footprints do not last forever. This view was expressed by Mark Robinson, one of the leading scientists operating the LRO.
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According to Robinson, it is because the moon is continually hit by micrometeorites. Micrometeorites are particles that are very small but move at high speed.
The impact will eventually damage the footprints or other objects.
Lasting 100 Million Years
In one study, scientists found that the moon's rocks corroded at a rate of 0.04 inches every one million years.
That means the footprints will last a long time. Even Robinson said, in human terms, it may seem like forever.
Even so, in the geological situation, the footprints of astronauts last about 10 to 100 million years.
The reason the footprint will last a long time is because on the Moon there is no erosion by wind or water as on Earth. This is because the moon has no atmosphere and all the water on its surface is frozen as ice.
Not only that, on the Moon there is also no volcanic activity that can change the shape of the surface of the moon.