DNA is a small, coiled thread in the center of every nucleus of our body. It’s so fine that to look at it we need a high power electron microscope just to see it! In our bodies we have about 10 trillion cells, which all contain DNA.
If you were to stretch the DNA out in just one person’s body, it would measure nearly 744 million miles! This means it could go all the way to the Sun and back 4 times! The moon is 250,000 miles away, so your DNA could also go there over 1500 times.