| | Learn more about Timeline of planetary exploration in the online encyclopedia. (Site not responding. Last check: 2007-11-01) |
 | | Luna 2 - 12 September 1959 - Lunar Impact |
 | | Luna 10 - 31 March 1966 - Lunar Orbiter |
 | | Luna 17/Lunokhod 1 - 10 November 1970 - Lunar Rover |
| www.onlineencyclopedia.org /t/ti/timeline_of_planetary_exploration.html (2450 words) |