Remore-controlled spacecraft often are more effective in carrying out scientific and observational missions that are [Manned space missions]
?.
The first such mission was the Sputnik I mission, launched October 4, 1957.
Unmanned programs through the ages (first mission year given, if known)
Early Earth-orbital missions
See also: Weather satellites, Communication satellites, etc.
Lunar exploration
- [Luna program]?, 1959 - Lunar exploration
- [Lunokhod program]? - unmanned Lunar Rover probes
- [Ranger program]? - Lunar hard-landing probes
- [Surveyor program]? - Lunar soft-landing probe
- [Orbiter program]? - Lunar orbital
Planetary exploration
See also space exploration, manned space missions.