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Moon diameter

Started by newhorizons

Distance/Size of Earth and Moon

Started by newhorizons

How to make a FE map, step one.

Started by jimster « 1 2 3 ... 8 »

When rockets launch....

Started by BrownRobin « 1 2 3 ... 5 »

Clarifications on UA

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100 proofs

Started by spherical