The missions would: return a sample from an icy comet, probe gas giant Saturn, explore the surface of fiery Venus, return a sample from a huge impact basin on the moon, visit asteroids orbiting the sun with Jupiter, repeatedly fly by Jupiter's radiation - soaked volcanic moon Io, and plant a network of geophysical observatories on the moon. (sciencemag.org)
Geochemist Erik Hauri at the Carnegie Institution for Science found water particles trapped inside rock crystals in volcanic moon rocks, a startling sign that the moon has far more water than scientists believed. (discovermagazine.com)
An illustrated cross-section of Jupiter's volcanic moon Io, including a thick magma ocean (red), as revealed by Jupiter's bent magnetic field lines (blue). (news.nationalgeographic.com)