___ 10 (first spacecraft to observe Jupiter)
Else clues• Avant-gardist
• Colonist
• Conestoga rider
• Conestoga traveler
• Conestoga wagon passenger
• Davy Crockett, e.g.
• Early adopter
• First in the field
• First mission to visit the outer planets
• Go first
• Individual in dock is early arrival (7)
• Innovator
• Johnny Appleseed was one
• Leader
• Lewis or Clark
• NASA probe
• NASA program that explored the outer planets
• Panasonic rival
• Pathfinder
• Settler
• Show the way
• Trailblazer
• Trailblazing musician
• Trailblazing settler
• Unmanned planetary probe
• Western settler
• Someone who helps to open up a new line of research or technology or art
• One the first colonists or settler in a new territory