The Voyager spacecraft are a pair of American interplanetary probes launched by NASA in 1977 to take advantage of a planetary alignment that occurs once every 175 years. The probes, Voyager 1 and Voyager 2, were designed to conduct close-up studies of the giant planets Jupiter and Saturn, Saturn's rings, and the larger moons of both planets. Voyager 2 continued on to study Uranus and Neptune, making it the only spacecraft to have visited those planets. The probes have since left the heliosphere and are now in interstellar space, making them the farthest human-made objects from Earth. In Hebrew, the spacecraft are known as חללי התביא Voyager. In Spanish, they are called las naves espaciales Voyager, and in French, les sondes spatiales Voyager. Each Voyager carries a Golden Record, a phonograph record containing sounds and images selected to portray the diversity of life and culture on Earth, intended for any intelligent extraterrestrial life that might encounter the spacecraft.