Eric Walker added Ice Mountains of Pluto as seen from New Horizon spacecraft : interestingasfuck to Pluto (planet)

Eric Walker added Ice Mountains of Pluto as seen from New Horizon Spacecraft : interestingasfuck to Pluto (planet)

Eric Walker added Pluto’s dark side spills its secrets — including hints of a hidden ocean to New Horizons (space mission) and Pluto (planet)

Eric Walker added Pluto has likely maintained an underground liquid ocean for billions of years | Astronomy.com to Pluto (planet)

Eric Walker added a number of links to Pluto (planet), and added Pluto (planet) to Planets

Eric Walker added a number of topics and Planetary Collisions Can Drop the Internal Pressures in Planets | www.caltech.edu and Radioactive elements may be crucial to the habitability of rocky planets to Planets, and added Planets to Outer space