These maps of Australia and Ireland show how population is concentrated in urban areas with virtually no people registered in the north and centreof Australia.
The bright nucleus is home to an older populationof stars, which grow ever more densely packed toward the centre.
星云明亮的核心是老一代星体所在，越靠近中心密度越大。
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To accommodate the rapid influx ofpopulation, city council plans to encourage high density housing in its town centre area which lies between Blundell and Bridgeport on both sides of No. 3 Road.