We’ve all seen the pictures of astronauts triumphantly placing an American flag on the surface of the moon, evidence of mankind’s excursion to a heavenly body far from home. But flag planting wasn’t as easy as the astronauts made it seem. American flags on the moon Apollo 11, the first mission to land on the moon, learned an important lesson about the moon’s surface when they tried to plant the American flag. It has been supposed that the dirt on the moon would be similar to earth’s. It was not and its unusual composition made the flag impossible to plant deeply into the soil. Unlike dirt granules on earth which are roundish, moon dirt is flattened with sharp edges. The granules tend to lock into…
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