https://www.universetoday.com/articles/comparing-two-proposed-nasa-missions-to-jupiters-moon-io
Comparing Two Proposed NASA Missions to Jupiter's Moon Io - Universe Today
missions to jupiter
https://www.space.com/4177-bold-missions-jupiter-saturn-planned.html
Bold New Missions to Jupiter and Saturn Planned | Space
Feb 18, 2009 - NASA and Europe are pushing ahead with ambitious new missions to Jupiter and Saturn.
missions to jupiterboldnewsaturnplanned