Launched in the 1970s with less computing power than a modern key fob, two small spacecraft have journeyed further from home than anything humanity has ever built — and they’re still calling home from interstellar space. This episode tells the extraordinary story of Voyager.

You’ll come away understanding how a rare planetary alignment made the “Grand Tour” possible, what the Voyagers discovered, what it means that they’ve entered interstellar space, and the story of the Golden Record they carry.

Talking Science is sponsored by Kinsoft. Visit www.kinsoft.com.au

Further reading: NASA JPL – “Voyager Mission” pages; Carl Sagan, Pale Blue Dot; Jim Bell, The Interstellar Age.