About 98% of the mass of the universe is made up of only two types of atoms: hydrogen and helium. That’s because these two elements make up stars like our sun and most of the stars in the universe.

AMO physicists strive to understand and control atoms, molecules, and light in new ways that were hardly dreamed about, only a decade ago. Experiments pioneered in the Department of Physics and in the ...

(Sources: BBC, NASA, New Scientist, PBS, Live Science ... is made of atoms, and atoms are indestructible and cannot be broken down into pieces All the atoms of a particular element are identical ...