A Hitchhiker’s Guide to the Moon
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“Imagine trekking in a lunar rover across miles of the Moon’s rough surface. Your mission: to explore a crater with suspected deposits of ice.
In every direction, the gray terrain looks more or less the same. Wouldn’t want to get lost in this place! you think to yourself. You arrive where the rover’s digital map says the crater should be … but it’s not there!
see captionIn a flash, you realize that your map is wrong. The crater’s true position must be slightly different. But how different? A kilometer? Ten kilometers? In which direction?
Mission aborted.
The story is fiction, but it raises a real-life issue: the need for accurate maps of the Moon’s terrain.”
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