Lifestyles in an Expanding Universe

• expansion described: scale factor
• expansion and areas, volumes
• from Einstein to Hubble
• analogies: raisin cake; balloon

Expansion and Redshifts

• animation in balloon analogy
• effect on galaxy spectra
• redshift recordholder
• cosmic time dilation: recently confirmed using distant supernovae

Expansion Explained: Cosmodynamics

• a matter-free universe
• the effect of matter
• density and destiny