What will happen to the CBR in the future if the universe continues to expand forever?
2) All quasars exhibit large redshifts in their spectrum. (a) What does this means about their motion relative to us? (b) What does this mean about the distance of quasars? (explain) (c) Why do we think that quasars are now extinct? (d) what is their relation with normal & active galaxies? (e) Why do quasars eventually become much less luminous & at first become active galaxies & later on normal galaxies?