Rosy hindsight for the technical crew behind the design, launch, analysis and direction of America's twin Voyager space probes in the late twentieth century. As with most real-life space sagas, it's a rich blend of tough math, contagious enthusiasm, absurd scale and one or two doses of high-pressure existential crisis.

The scientists and optical specialists chosen for these interviews aren't polished speakers. They might stumble over a word or change their phrasing mid-sentence, but that makes them more relatable, more essentially human, which reinforces the sense of achievement that's so important to the whole picture. Their stories are still fascinating; their passion for the project (and their role in it) still boundless. Those excited recollections, plus the requisite space porn that the dual spacecraft zapped back to Earth, make for a great pair. It's when this documentary is at its best. Less so, the occasional insertion of odd stock video clips and dreamy narration. Seems like somebody watched the well-known YouTube clip of Carl Sagan's "Pale Blue Dot" speech and tried to polish it up.

The film's obsession over the famous golden LPs that stowed away on each craft, endlessly circling back to revisit their production, also seems excessive. Especially as the interviewees specifically deride the mass media fixation surrounding both objects. The central story of long-term adventure and tireless exploration should have been fantastic enough on its own.