Solved cryptogram
A blue star is far hotter than a red one, so the color of a star is a thermometer reading.
Astronomy Facts, sourced to NASA Imagine the Universe.
Solve it yourself
This fact is a cryptogram here: 69 letters over 17 different ones, graded easy.
Or go to the puzzle’s own page first.
What it means
Anything glowing shifts its color with temperature, in the same way an iron bar in a forge goes red, then orange, then white. Stars follow the same rule, running from around three thousand degrees for a dull red one to tens of thousands for a blue one. Our sun sits in the middle and reads as white from space; it looks yellow from the ground only because the air scatters its blue light away, which is what makes the sky blue.
The claim comes from NASA Imagine the Universe.
- SourceNASA Imagine the Universe
- CollectionAstronomy Facts
- Difficultyeasy
- Length69 letters, 17 of them different
Nearby in the collection
The facts either side of this one.
- NASAmedium, 69 letters
- NASAeasy, 67 letters
- NASA Imagine the Universeeasy, 70 letters
- NASA Imagine the Universemedium, 72 letters
About as hard as this one
Scored closest to it by the model behind our guide to solving cryptograms.