Astronomy Facts

The solar system and what lies past it, cited to the missions that went out and looked.

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50 cryptograms, each one a fact written for this site rather than a sentence taken from a book. Cited to NASA and RSC.

Sources

SourceFacts

How hard they are

10 easy, 29 medium and 11 hard, graded by the model described in our guide to solving cryptograms.

They average 73.1 letters over 19 distinct ones, with 4 letters appearing exactly once.

TierCryptogramsPlay

Every one of them

Each has a page of its own naming its source, and its answer on a separate page so you will not run into it by accident.

Source

Other fact collections

CollectionCryptograms

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