If you don’t count repeats, there are only seven different letters in “the alphabet”: T, H, E, A, L, P and B. Now you see why this question catches so many people off guard. If you said ...

The discovery suggests that the alphabet emerged 500 years earlier than we thought, ... when 20 or so Egyptian hieroglyphs were repurposed as the first alphabet’s letters.

Space Alphabet, in pictures. The Earth Observatory has tracked down images resembling all 26 letters of the English alphabet using only NASA satellite imagery and astronaut photography ...