When there was nothing but cooling Hydrogen ions in the early universe (and some Helium and a little bit of Lithium) there was no dust. There was also no (or very little) ionizing radiation to keep the ions excited. So the universe cooled off, and electrons teamed up with protons and formed atoms, without the need for protective dust to accelerate the process.
Originally posted by biknewb
@Jul 25 2005, 01:14 PM
when there was nothing but hydrogen atoms in a very early universe, where did the (molecules of the) dust come from?
Forming opinions as we speak