The mysterious particles of physics, part 2
Discovery
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The Six Kinds of Quarks and Their Relatives, Capped Off by the Higs
Kate free is an astrophysicist and dark matter expert at the university of michigan. The first evidence, perhaps, of these tiny things in the universe came from observations of the largest things - clusters of galaxies that weighed more than met the eye. Most of the mass in galaxies is made not of ordinary stars or ordinary matter; most of it is made of dark matter. So about 85 % of themass in the universe is made ofdark matter ratherh ordinary stuff. I mean, what a bizarre thing. Our bodies, the air that we breathe, the chairs we're sitting in, everything made of atoms, made of quarks. But it's only five per cent of
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