u serious son??
theres a probe on every planet and 2 voyagers just exiting the solar system.. theres pictures all over the fu*king place.. google cassini pictures on Saturn
The Voyager program is a U.S program that launched two unmanned space missions, scientific probes Voyager 1 and Voyager 2. They were launched in 1977 to take advantage of a favorable planetary alignment of the late 1970s. Although officially designated to study just Jupiter and Saturn, the probes were able to continue their mission into the outer solar system, and are expected to push through the Heliosheath. These probes were built at JPL and were funded by NASA. Voyager 1 is the farthest human-made object from Earth. On 15 June 2012, NASA scientists reported that Voyager 1 may be very close to entering interstellar space and becoming the first human-made object to leave the Solar System.
Both missions have gathered large amounts of data about the gas giants of the solar system, of which little was previously known. In addition, the spacecraft trajectories have been used to place limits on the existence of a hypothetical trans-Neptunian planet.
it already passed the heliosheath