1965 - James Gunn[?] and Bruce Peterson[?] use observations of the relatively low absorption of the blue component of the Lyman-alpha line[?] from 3C9[?] to strongly constrain the density and ionization state of the intergalactic medium
... of 2000, there are 53,364 people, 21,348 households, and 13,363 families residing in the city. The population density is 481.1/km² (1,246.0/mi²). There are ...