space-age: Sync

[tasxatzial]

For #48in24

Sync docs, metadata, tests

The existing implementation of the tests uses a separate function for each planet, but the last test (unknown planet as input) in canonical data implies that there should be only one function for all tests. Changing the tests to reflect that will break all solutions, so at this point, i decided to just mark the test as excluded.

[github-actions]

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