On July 9, 1979, NASA's Voyager 2 spacecraft made its closest approach to Jupiter. It came within 354,000 miles (570,000 kilometers) of the planet's cloud tops. Voyager 2 was one of two space probes ...

New spacecraft data from Pioneer, Voyager and Juno show that Jupiter is slightly smaller and more flattened than earlier estimates, refining the planet’s measured size and shape.

Much of our understanding of Uranus comes from Voyager 2's flyby, which to date remains the only time a spacecraft has visited the planet. Voyager 2's data on the magnetosphere surrounding Uranus has ...