PROBES ON THE GO
The first space probe was the Soviet-launched Sputnik 1 in 1957. Sputnik was the first man-made object in space. In July 1976, the Viking 1 probe made the first successful soft landing on Mars. The Viking 1 probe sent images back to Earth for more than six years. Voyager 1 is the farthest man-made object from Earth at about 11.7 billion miles away. The probe is expected to transmit signals until 2020.
Estimated number of probes sent from all nations. One probe might be counted multiple times in the solar system. Space probes sent (as flyby, orbiter or lander) Lander on planet Neptune Saturn Uranus Mars Mercury Pluto Venus Titan Asteroid belt and Kuiper belt Jupiter Comet probes Sun Impactor mission