| Answer | Crossword Clue |
|---|---|
| MICRON | Distance light travels in 3.3 femtoseconds |
| PARSEC | Distance light travels in 3.26 years |
| Answer | Crossword Clue |
|---|---|
| MICRON | Distance light travels in 3.3 femtoseconds |
| PARSEC | Distance light travels in 3.26 years |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.