| Country | : | USA |
| Research Org | : | NASA |
| Mission launch | : | First Moon Mission Launched 1966 |
| Explorer-33 | : | Launch 07.01.66: Contact Lost 09.21.71 |
| Explorer-35 | : | Launch 07.19.67: Spacecraft Shutdown 06.24.73 |
| Explorer-49 | : | Launch 06.10.73: Last Contact Aug 1977 |
Explorer 49 was the last U.S. mission to the Moon for 21 years. The next American lunar spacecraft was 1994's Clementine mission.
Explorer 49 was also the largest spacecraft to enter lunar orbit. The spacecraft's main mission was radio astronomy. Using a set of giant antennas, the spacecraft took measurements of the planets, our Sun and beyond. The mission ended in June 1975.
References
http://sse.jpl.nasa.gov/missions/profile.cfm?Sort=Target&Target=Moon&MCode=Explorer_49









afrikaans
albanian
arabic
belarusian
bulgarian
catalan
chinese
chinese simplified
chinese traditional
croatian
czech
danish
dutch
english
estonian
finnish
french
galician
german
greek
hebrew
hindi
haitian creole
hungarian
icelandic
indonesian
irish
italian
japanese
korean
latvian
lithuanian
macedonian
malay
maltese
norwegian
persian
polish
portuguese
romanian
russian
serbian
slovak
slovenian
spanish
swahili
swedish
tagalog
thai
turkish
ukrainian
vietnamese
welsh
yiddish 
