<prompt> Translate the following text to EnglishUwiano wa kupatikana kwa sayari za amonia ya hidrojeni na sayari zao za maji na oksijeni zenye unene mkubwa katika galaksi nzima - na kumbuka kwamba kwa kweli wamefanya uchunguzi wa kiasi kikubwa cha sampuli ya galaksi ambayo sisi, bila safari ya kati ya nyota, hatuwezi kufanya - ni karibu 3 kwa 1.  <response>: The ratio of occurrence of hydrogen-ammonia planets and these super-dense water-oxygen worlds of theirs over the entire Galaxy--and remember that they have actually conducted a survey of significant sample volumes of the Galaxy which we, without interstellar travel, cannot do--is about 3 to 1. 