A NASA mission arriving in the Pluto system next year could help scientists figure out if the dwarf planet's largest moon Charon might have once harbored a subsurface ocean of liquid water ...

This “kiss and capture” mechanism offers a fresh perspective on planetary formation, particularly about Pluto and its largest moon Charon.

Pluto may have got romantic to capture its largest moon, colliding and engaging in a passionate but icy 10 hour kiss with Charon billions of years ago.

Astronomers Demote Pluto Clyde Tombaugh's 1930 discovery is reclassified as a dwarf planet after much scientific debate. -- Pluto's moon Charon may be the "Hulk" of the solar system.

Using computer models, researchers studying Pluto and its moon, Charon, have discovered an unforeseen kind of cosmic collision and the potential for oceans in the outer solar system.

A new study provides additional insight into relationship between Pluto and its moon, Charon, and how it affects the continuous stripping of Pluto's atmosphere by solar wind. When Charon is ...

The newfound Pluto moon was spotted by researchers using NASA's Hubble Space Telescope. The instrument has also found three other Pluto satellites — P4 last year, and Nix and Hydra in 2005.

Astronomers using the Hubble Space Telescope have discovered Pluto's fifth moon, a little more than three years before a NASA space probe is due to sail past the dwarf planet and its tribe of ...