The Solar Janitor
nPoynting-Robertson Clock
nPhotons emitted by sun strike objects in space
nObjects lose speed, falling into the sun
nSmall particles fall first
nCosmic dust still in abundance in space
nindicates short age of the universe
nExpect to find dispersion in meteor stream
nsorting by particle sizes
nno dispersion found
nStars still surrounded by clouds of dust and gas
nIndicates young age