Documents The Big Bang Necessary? –Expansion of the Universe –Origin of CMBR 400 photons/cc Black body...

Slide 1 The Big Bang Necessary? –Expansion of the Universe –Origin of CMBR 400 photons/cc Black body temperature profile –Helium content Universal nucleosynthesis (like…

Documents Why did the Persians attack Greece? What famous battle started the Persian wars? Who were the...

Slide 1 Slide 2  Why did the Persians attack Greece?  What famous battle started the Persian wars?  Who were the father and son that led Persia during the Persian…