2004 Death "Francis Crick, Ph. D", DNA researcher, co-discoverer of the structure of DNA, dies at 88 1997 Death Eugene Shoemaker, astronomer, co-discoverer of the Shoemaker-Levy comet that had a spectacular collision with Jupiter in 1994, dies at 69 1920 Birthday Owen Chamberlain, physicist/co-discoverer, antiproton, Nobel-1959 1899 Birthday Charles H Best, Maine, physiologist/co-discoverer, Insulin 1892 Death John Couch Adams, English co-discoverer of Neptune, dies 1823 Birthday Alfred Russel Wallace, British zoologist/co-discoverer, evolution 1811 Birthday Urbain Jean Joseph le Verrier, co-discoverer, Neptune
