Despite the lack of a dedicated mission to the planet, scientists have learned plenty through ground observations and space telescopes ...

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...

Hubble Space Telescope imagery Neptune has revealed that the planet's clouds are disappearing. Credit: NASA Goddard Space ...

NASA’s Voyager mission launched in the 1970s. Today, it’s making history as it conducts new science. But how are two ...

NASA reconnected with Voyager 1, which is located nearly 15 billion miles away from Earth, after a brief pause that triggered ...