Wednesday, August 11, 2004

Plant a radish -- Part 2 Harvest time

Of every 100 atoms in the universe, 91 are hydrogen, and virtually all the rest are helium.

You can make a universe of stars and galaxies out of hydrogen and helium, but you can't make a radish.

Of every 100 atoms in a radish, about 60 are hydrogen and none are helium. The other 40 or so atoms are mostly oxygen, carbon and nitrogen.

For 14 billion years the universe has been cooking up heavy elements in stars. The radish is the froth on the pot.