A cikin watan Disamba na shekara ta 2004, Luu da Jewitt sun ba da rahoton gano ruwan kankara a kan Quaoar, wanda a wancan lokacin shine mafi girman sanannen Kuiper Belt object. Sun kuma sami alamun ammoniya hydrate. Rahotonsu ya nuna cewa mai yiwuwa kankara ta samo asali ne a karkashin kasa, ta zama bayyananniya bayan haɗuwa da wani abu na Kuiper Belt a wani lokaci a cikin 'yan shekarun da suka gabata.A shekara ta 2012, ta lashe (tare da David C. Jewitt na Jami'ar California a Los Angeles) kyautar Shaw "don ganowa da kuma siffar jikin trans-Neptunian, dukiyar archaeological da ke komawa zuwa tsarin tsarin hasken rana da kuma tushen dogon lokaci na gajeren lokaci". Tambaya: Menene kuma Luu da Jewitt suka samu?
ammoniya hydrate