Jupiter to several seconds, and short bursts (or S-bursts) that had a duration of less than a hundredth of a second. Scientists discovered that there were three forms of radio signals transmitted from Jupiter. Since 1973 a number of automated spacecraft have visited Jupiter, most notably the "Pioneer 10" space probe, the first spacecraft to get close enough to Jupiter to send back revelations about the properties and phenomena of the Solar System's largest planet. Flights to other planets within the Solar System are accomplished at a cost in energy, which is described by the net change in velocity of the
Space probe Transport Network. First man-made object to soft land on the Moon, or any other extra terrestrial surface. First mission to photograph the far side of the Moon, launched in 1959. First robotic sample return probe from the Moon. First rover on Moon. It was sent to the Moon on November 10, 1970. First probe to Mercury. First successful in-place analysis of another planet. It may have also been the first space probe to impact the surface of another planet, although it is unclear whether it reached Venus' surface. The Venera 7 probe was the first spacecraft to successfully soft land