Most famously, it was voyager 1 and 2 that explored these outer gas planets and have given us so much information. Other probes have been sent to these gas giants, but these are the the probes that visited all four gas giants between them.
Voyager 1 and 2 visited the outer planets and went on into interstellar space.
All four outer planets. Voyager 1 flew by Jupiter and Saturn only, and Voyager 2 flew by Jupiter, Saturn, Uranus, and Neptune. Pluto, which is no longer considered to be a planet, was not included in the fly-by.
These were two probes called voyager 1 and voyager 2. Voyager 1 visited Jupiter and Saturn, while voyager 2 visited all four gas giants; Jupiter, Saturn, Uranus, and Neptune. The probes also flew close to moons of these planets and discovered more moons in addition to many other things. Voyager 1 is now the most distant man made object from earth. Both are still able to send signals back to earth.
Jupiter (Voyager 1 & 2)Saturn (Voyager 1 & 2)Uranus (Voyager 2)Neptune (Voyager 2)See related link for a full description of the Voyager exploration
the United States has sent 10 probes to Jupiter, (1) Pioneer 10, (2) Pioneer-Saturn, (3) Voyager 1, (4) Voyager 2, (5) Ulysses, and (6) Galileo.
into deep space
Voyager 1 and 2
Voyager 1 and 2 visited the outer planets and went on into interstellar space.
Voyager 1 and 2 visited the outer planets and went on into interstellar space.
There have been 7 NASA space probes that flew by Jupiter: Pioneer 10 Pioneer 11 Voyager 1 Voyager 2 Ulysses Cassini New Horizons
Voyager 1 flew by Jupiter and Saturn. Voyager 2 flew by Jupiter, Saturn, Uranus, and Neptune.
Voyager I & II
All four outer planets. Voyager 1 flew by Jupiter and Saturn only, and Voyager 2 flew by Jupiter, Saturn, Uranus, and Neptune. Pluto, which is no longer considered to be a planet, was not included in the fly-by.
These were two probes called voyager 1 and voyager 2. Voyager 1 visited Jupiter and Saturn, while voyager 2 visited all four gas giants; Jupiter, Saturn, Uranus, and Neptune. The probes also flew close to moons of these planets and discovered more moons in addition to many other things. Voyager 1 is now the most distant man made object from earth. Both are still able to send signals back to earth.
Voyager did not discover any new planets. By the time Voyager was launched we already knew of all the planets in our solar system that we know of today. There were also two Voyager probes, not one. The first planet that either probe studied was Jupiter, which we had known for millennia. Voyager 1 flew by Jupiter in March 1979 while Voyager 2 flew by in July of the same year.
Jupiter (Voyager 1 & 2)Saturn (Voyager 1 & 2)Uranus (Voyager 2)Neptune (Voyager 2)See related link for a full description of the Voyager exploration
Voyager 2 flew by four planets; Jupiter, Saturn, Uranus and Neptune.