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.

In the nick of time, NASA teams addressed clogging issues in the probe’s backup roll thrusters, before the only antenna ...

This was the second of 14 moons discovered at Neptune. It was also the last one to be discovered with certainty before NASA's Voyager 2 spacecraft flew by Neptune in 1989. Astronomers suspected ...

Launched in 1977, Voyager 2 is the only spacecraft to visit Uranus and Neptune. It's currently more than 19.31 billion kilometers (12 billion miles) from Earth. Voyager 1 is over 24.14 billion ...

Voyager 2 and its sibling spacecraft, Voyager 1 ... discovered in Voyager images),” Richardson said. “At Uranus and Neptune, the tilt of the magnetic fields led to PLS seeing smaller density ...

When the Voyager 2 spacecraft became the first and only mission ... such as Jupiter, Saturn and Neptune. Magnetospheres are the protective bubbles around planets like Earth that have magnetic ...

Space photo of the week: 1st-ever close-up of Neptune is Voyager 2's final portrait of a planet —SpaceX's Falcon 9 rocket grounded for the 3rd time in 3 months following 'off-nominal' crash ...

Both spacecraft left our solar system, with Voyager 1 crossing the heliosphere boundary in 2012 and Voyager 2 in 2018 after its flyby of Neptune. The Voyager spacecraft are powered by Radioisotope ...