Encountering Neptune in 1989, NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer ...

The robotic solar-powered probe is due to enter orbit around Jupiter in 2030 after journeying about 1.8 billion miles (2.9 billion km) in 5-1/2 years. The launch had been planned for last week but ...

"It will travel 1.8 billion miles (2.9 billion kilometers) to arrive at Jupiter in 2030 and in 2031 ... its massive solar arrays shortly after launch. The solar arrays, which extend the length ...