A newly discovered distant mini-Neptune planet may possess its own atmosphere, ocean, or a combination of the two, even if they don't last for long. The extrasolar planet, or exoplanet, designated ...

"Triton shows tantalizing hints at being active and having an ocean," NASA scientist Dr. Amanda Hendrix told the New York Times. "It is a three-for-one target, because you can visit the Neptune ...

Neptune's moon Triton may have subsurface ocean By Amanda Doyle September 7, 2012 / 10:19 AM EDT / Space.com ...

This color photo of Neptune's largest moon Triton was obtained by NASA's Voyager 2 probe on Aug. 24, 1989, from 330,000 miles away. The resolution is about 6.2 miles, sufficient to begin to show ...

It’s 30 years this week since NASA’s Voyager 2 spacecraft made a close flyby of Neptune, giving humanity its first and only close-up. Arriving on August 25, 1989, it marked the end of the ...