Event:
NASA's MESSENGER spacecraft ends its three-year orbit around Mercury with a planned crash into the planet's surface; originally, the probe was to orbit and collect data for one year, but fuel saving efforts extended its mission for two more years
More Notable Events on April 30:
1989 Critics Siskel and Ebert film their 500th TV movie-review show
1980 Terrorists seize Iranian Embassy in London
1955 Element 101, Mendelevium, announced
1952 Mr. Potato Head is 1st toy advertised on television
1947 Boulder Dam renamed in honor of Herbert Hoover
