je  planeti kekere ni ibi igbaja asteroidi.Itokasi Awon asteroidi.. 
Ralph Marvin Steinman (January 14, 1943 – September 30, 2011) je was a Canadian aṣenileÀjẹsára ati aseoroigbe ahamo ara Kanada ni Rockefeller University, to da oro to únjẹ ahamo denedti ni 1973.Ìtọ́kasí ara Nobel ara kanadáàwọn ẹlẹ́bùn Nobel ninu iwosan.. 