Tuesday, May 4, 2010

How many atoms are there?

There are about 10 ^ 80 atoms in the universe (that's 10 to the 80th power...a really big number).  Of course, that's give or take a few orders of magnitude.  According to one estimate, the range varies from 10 ^ 78 to 10 ^ 82.  However many there are though, there are only 112 different kinds of atoms, one for each element of the periodic table. 

Need more information? Newspaper archives are one of the best online research tools.