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WikiPedia: Sao_Lâu http://www.lcsd.gov.hk/CE/Museum/Space/Research/St... http://www.lcsd.gov.hk/CE/Museum/Space/Research/St... http://www.lcsd.gov.hk/CE/Museum/Space/Research/St... http://aeea.nmns.edu.tw/2006/0605/ap060519.html http://aeea.nmns.edu.tw/2006/0605/ap060521.html http://aeea.nmns.edu.tw/2006/0607/ap060710.html https://web.archive.org/web/20090929163750/http://... https://web.archive.org/web/20100811014924/http://... https://web.archive.org/web/20100818141141/http://...