When Voyager 1 launched in 1977, each of its main computer systems had less than 70 kilobytes of memory — smaller than a typical phone photo — and that 1970s hardware is still carrying out commands fr
NASA's Voyager 1 spacecraft continues to operate using 1970s-era computer systems with less than 70 kilobytes of memory. The mission's longevity is attributed to deliberate redundant hardware design.
Why it matters
This demonstrates the effectiveness of robust, redundant engineering in extreme environments, challenging modern assumptions about the necessity of high-performance computing.
The most distant object humans have ever built runs on computers with less memory than a typical phone photograph.
By Space Daily Editorial Team · Editorial process
According to IEEE Spectrum, each of Voyager 1’s main computer systems has about 69.63 kilobytes of memory , roughly comparable to a small, heavily compressed thumbnail. Nearly five decades after launch, that 1970s hardware still receives and carries out commands from Earth. It is a figure that complicates the usual assumption that difficult problems always demand more computing power.
A note on framing: we are writers and journalists, not aerospace engineers or mission specialists. What follows is our reading of NASA’s reporting and technical coverage of the Voyager programme, not an independent engineering assessment.
The spacecraft does not rely on a single computer. It has three principal computer systems, all designed in the 1970s, each responsible for a different part of the mission.
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