Voyager 2 is a mission launched by NASA in 1977 to explore Uranus and Neptune. Voyager 2 came in close contact with Neptune and its moon Triton, gathering a lot of information about its moon. Voyager is now providing direct measurements of the temperature and density of interstellar plasma, as it became the first human-made object to venture into interstellar space.
The Deep Space Network provides communication and tracking services to Voyager 2 through its 34 and 70 meter antennas.