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NEW YORK — A new documentary follows the making and epic journey of NASA's two Voyager probes, which set out in 1977 and gave humanity its first close-up views of Jupiter, Saturn, Uranus and Neptune (and far-off view of Earth). 

"The Farthest" had its international premiere Thursday night (April 20) at the Tribeca Film Festival in New York — the filmmakers are based in Ireland, and its national premiere was held there — and screenings will continue until Monday (April 24). (You can get tickets on the festival website.) If you miss it, though, never fear — the film is scheduled to air on PBS Aug. 23.

The documentary delves into the engineering that went into the two solar system probes, which still mark the farthest human-made objects have penetrated into space — Voyager 1 reached interstellar space in 2012, and Voyager 2 is on its way, each carrying a golden record filled with the songs, greetings and views of Earth. Scientists, engineers and even people whose voices appear on the record recall the crafts' turbulent journeys and the scientific discoveries made along the way in a powerful, visually dazzling ride.

"Right now, it's coming to the end and the beginning of a journey for us," Emer Reynolds, who wrote and directed the documentary, said in a Q&A after the film. "It's been two years of raising the funds and two years of making the film — and it's not quite Voyager's 12-billion-mile journey, but it kind of feels like it." The film premiered first in Dublin, and then at Tribeca, kicking off a tour of film festivals, Reynolds said.

"Toward the end of the year it will have its TV life, because it coincides with the 40th anniversary of Voyager's launch — so that's its trajectory," she added.

Email Sarah Lewin at slewin@space.com or follow her @SarahExplains. Follow us @Spacedotcom, Facebook and Google+. Original article on Space.com