In 1989, Voyager 2 became the first and only spacecraft to ever fly by Neptune, and images from that mission famously show a planet that's a deep azure color. But in reality, Neptune is far more ...

Voyager 2, NASA's longest-running mission, explored Neptune during a historic encounter on Aug. 25, 1989, sending back humanity's first close-ups of the planet.

While Voyager 1 focused on Jupiter and Saturn, Voyager 2 visited both those planets and also ventured to Uranus and Neptune.

The contrast on the early Voyager images of Neptune were also strongly enhanced to better reveal the clouds and winds of the planet.

NASA's Voyager 2 spacecraft made its closest approach to Jupiter. It came within 354,000 miles (570,000 kilometers) of the ...

John Casani, who has died aged 92, was an American spaceflight engineer who led the teams that pioneered Nasa’s explorations ...

However, at Neptune’s surface, the gravity is only about 1.1 times the gravity we experience on Earth. In other words, if ...

This picture of Neptune was taken by Voyager 2 less than five days before the probe's closest approach of the planet on Aug. 25, 1989.

Neptune isn't as blue as people think, and astronomers have figured out why Uranus sometimes appears a tad greener. (Story aired on All Things Considered on Jan. 5, 2024.) ...

The Six Most Amazing Discoveries We’ve Made About Neptune Despite the lack of a dedicated mission to the planet, scientists have learned plenty through ground observations and space telescopes ...