a bacteria can be 5 micrometers long, and the average human height is 178cm, giving a ratio of 1:356,000. BUT CHECK THIS OUT: an X-Wing is 13.4m long and our moon is 3474km in diameter, giving a ratio of 1:259,313. anyway they're different but they're not THAT different, and that sound you hear is the stern voice of math saying that my metaphor is strained but not THAT strained