Tuesday, July 14, 2026
Tip for Hard Puzzles: Hard puzzles reward frequency analysis. The most common letters in English are E, T, A, O, I, N — the cipher letter that appears most often is likely E. Doubled letters are often LL, SS, or EE. Work from the high-frequency end and use word-shape patterns to confirm. Full solving guide →
About the Author
Carl Sagan was an American astronomer and science communicator who became famous for making complex cosmic concepts accessible to millions through his iconic television series Cosmos. He championed critical thinking and the scientific method while warning against pseudoscience, famously coining the phrase "extraordinary claims require extraordinary evidence." Sagan's passionate advocacy for space exploration and his poetic reflections on humanity's place in the universe inspired generations to look skyward with wonder and curiosity.