Nature 432, 731 - 733 (09 December 2004); doi:10.1038/nature03111 【Crystalline water ice on the Kuiper belt object (50000) Quaoar】 DAVID C. JEWITT1 AND JANE LUU2 Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, Hawaii 96822, USA 2 MIT Lincoln Laboratory, Lexington, Massachusetts 02420, USA