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How We Diagnosed and Fixed the 2023 Voyager 1 Anomaly from 15 Billion Miles Away

Flight Software Workshop · talk · Watch on YouTube

Space exploration & spaceflightTesting, debugging & developer tools

What it is

JPL's David Cummings presents at the 2025 Flight Software Workshop how the team diagnosed and fixed the 2023 Voyager 1 anomaly from billions of miles away. It walks through the flight computer and the memory fix.

Why Hacker News recommends it

Commenters recommend it for the remarkable remote reverse engineering done on decades-old hardware with no simulator.

  • 2 people recommended it
  • 2 different months
  • 1 strong recommendations
  • first 2026, last 2026

What HN commenters said

  1. “Blows my mind of the reverse engineering done to achieve this”

    Technical deep dive on fixing Voyager 1 remotely.

    wanderingmind, 2026-08 · Strong recommendation · in “NASA to keep its 48-year-old Voyager 2 probe running for yet another year”

  2. “It goes over how the flight computer works and he walks through a few assembly routines.”

    Walkthrough of the flight computer and the memory chip fix.

    ndiddy, 2026-04 · Recommendation · in “NASA Shuts Off Instrument on Voyager 1 to Keep Spacecraft Operating”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: voyager 1, jpl, flight software, reverse engineering, debugging

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