Mathematicians calculated where the planet might be based on its effects on Uranus, and astronomers searched for less than an ...

Thirty years ago, on Aug. 25, 1989, NASA’s Voyager 2 spacecraft made a close flyby of Neptune, giving humanity its first close-up of our solar system’s eighth planet. Marking the end of the Voyager ...

Why it's so special: Only one spacecraft has ever visited the eighth and most distant planet from the sun. On Aug. 25, 1989, NASA's Voyager 2 spacecraft took the first-ever close-up images of Neptune.

NASA's Voyager 1 launched 48 years ago in September 1977 on a decades-spanning journey to study the cosmos and search for ...

Neptune, long believed to be dark blue, is actually very pale like Uranus, scientists say. They used modern telescopes to re-assess artificially enhanced images taken by NASA's Voyager 2 probe. We can ...

Thirty years ago, NASA's Voyager 2 mission flew by Neptune, capturing the first close-up images of the blue gas giant. Before this, the eighth planet in our solar system was only known as a fuzzy dot ...

On September 5, 1977, the power situation was a good deal healthier when the mission got underway. Launched just over two ...

Historic color photos of Uranus and Neptune are actually the wrong colors, and a recent study used new data and a lot of math to set the record straight. In Voyager 2’s full-color photos of the ice ...

Twenty-five years ago this week, NASA's Voyager 2 probe began its epic, ongoing space odyssey, a voyage of discovery that many consider humanity's greatest feat of pure space exploration. Zooming past ...

Banner image: Artist's depiction of the Voyager spacecraft. (Credit: Caltech/NASA-JPL) For nearly 50 years, NASA’s Voyager 1 mission has competed for the title of deep space’s little engine that could ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. What it is: One of the final photographs of Neptune taken by NASA's Voyager 2 probe Where it is: ...