Interesting, the diameter of the Earth is about 12,000 km. The distance to the Sun is about 150 million km. The Hydrogen atom is much "larger", in comparision.
If you really want a mindf-ck, check Avogadro's number (6.022 * 10^23), the number of atoms in 12 grams of C.
Edit: I might add that I learned the above from a chemistry course book. More sense of wonder than when I read about the Orion project; almost as when I learned where atoms heavier than Helium comes from.
If you really want a mindf-ck, check Avogadro's number (6.022 * 10^23), the number of atoms in 12 grams of C.
http://en.wikipedia.org/wiki/Avogadro_constant
Then compare that to the number of stars in our galaxy multiplied by the number of known galaxies...
http://en.wikipedia.org/wiki/Milky_Way
http://en.wikipedia.org/wiki/Galaxy
Edit: I might add that I learned the above from a chemistry course book. More sense of wonder than when I read about the Orion project; almost as when I learned where atoms heavier than Helium comes from.