[4] The cast includes more than 20 of the original and current mission scientists, engineers, team members and NASA employees;[5] among them are Frank Drake, Carolyn Porco, Lawrence Krauss, Timothy Ferris, Edward C. Stone, Nick Sagan, Larry Soderblom, Fran Bagenal and Jon Lomberg.

"[7] Leslie Felperin of The Guardian also gave the film four stars out of five, stating, "his exquisite, exemplary science documentary, directed by Irish editor turned helmer Emer Reynolds, recounts the rich and fascinating story of the Voyager mission, arguably Nasa’s finest, noblest contribution to scientific understanding.

"[8] Frank Scheck of The Hollywood Reporter commented, "The Farthest ultimately proves a welcome and invaluable reminder, in these budget-challenged times, that space exploration is of boundless importance.

"[9] Nick Schager of Variety wrote, "It’s rare for a film to make one swell with pride about something he or she had no direct hand in, but “The Farthest” accomplishes that feat with aplomb.

"[10] Noel Murray of the Los Angeles Times observed, "Reynolds takes a thorough and direct approach to the Voyager story, weaving together insightful and unexpectedly poetic interviews with several of the people who worked on the project, illustrated with a mix of archival footage and artfully shot re-creations.