There isn’t any “true” up, down, north, south, or backwards, forwards. To orient yourself, you have to decide on a reference object. Often, it is either the Earth or the Sun. If you have your reference object, you can say “I am 4,000 kms away from Earth, with my closest coordinate on the surface being 30° North, 15° East, or some other information that communicates where you are compared to Earth.
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