1969 - Caltech where he began the search for Earth-crossing asteroids and where he advanced the idea that sudden geologic changes can arise from asteroid strikes and that asteroid strikes are common over geologic time periods.
October 17, 1974 - E. F. Helin discovers a minor planet and names it 2074 Shoemaker.
1993 - Co-discovered Comet Shoemaker–Levy 9 using the 18" Schmidt camera at Palomar Observatory. This comet was unique in that it provided the first opportunity for scientists to observe the planetary impact of a comet. Shoemaker–Levy 9 collided with Jupiter in 1994.
18 July 1997 - A road accident near Alice Springs ends the
life of Eugene M. Shoemaker, the 20th century's greatest planetary
geologist. Coroner's Report
06 Jan 1998 - Aboard an Athena rocket "Lunar
Prospector" is launched to the Moon carrying a small amount of Gene's
cremains. It's mission: to map the moon for elements. It's discovery:
confirmation of water/ice in craters at the lunar poles.
31 July 1999 - Impact of "Lunar Prospector"
occurred at 09:52:02 GMT, 02:52am Pacific Daylight Time.