11 Space Missions That Changed How We See the Universe

3. The Outer Reaches: Voyager 1 and 2

Launched in 1977, the Voyager spacecraft have journeyed farther than any other human-made objects, exploring the outer planets and now venturing into interstellar space. Voyager 1 and 2 provided the first detailed images of Jupiter, Saturn, Uranus, and Neptune, transforming our understanding of these distant worlds. Their discoveries, such as active volcanoes on Jupiter's moon Io and the intricate ring systems of Saturn, revolutionized planetary science. The Voyagers continue to send back data from beyond the heliosphere, offering insights into the boundary of our solar system and the nature of interstellar space.