Pioneer 10, the world’s first outer-planetary probe,was
launched from Cape Canaveral, Florida, on a mission to
Jupiter, the solar system’s largest planet, on this day
in 1972.

In December 1973, after successfully negotiating the
asteroid belt and a distance of 620 million miles,
Pioneer 10 reached Jupiter and sent back to Earth
the first close-up images of the spectacular gas giant.

In June 1983, the NASA spacecraft left the solar system
and the next day radioed back the first scientific data on
interstellar space. NASA officially ended the Pioneer 10
project on March 31, 1997, with the spacecraft having
traveled a distance of some six billion miles.