HardwareNASA manages to fix Voyager’s garbled data problem, even though it’s more than 15 billion miles awayWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works.
HardwareNASA manages to fix Voyager’s garbled data problem, even though it’s more than 15 billion miles awayWhen you purchase through links on our site, we may earn an affiliate commission.Here’s how it works.
When you purchase through links on our site, we may earn an affiliate commission.Here’s how it works.
(Image credit: NASA/JPL-Caltech)
Back in November, NASA’s second longest-running spacecraft Voyager I began sending data that made no sense whatsoever. Instead of information about its status and what various sensors were recording, all the scientists got was ameaningless repeated pattern. Well, after much head-scratching and hard work, engineers have fixed the issue and confirmed thatVoyager I is transmitting properlyonce more, from the depths of interstellar space.
It’s fair to say that nobody really expected the spacecraft to continue functioning for so long but despite a few glitches along the way, it’s continued to provide valuable information about the nature of our Solar System.
That was until November 2023, when its Telemetry Modulation Unit (TMU) appeared to have failed, as it just sent a constantly repeating pattern of data. NASA’s engineers ultimately discovered that the TMU was working as intended—the issue wasone of the ancient memory chipsfor theFlight Data Subsystem(FDS) had failed, either due to a high-energy particle wrecking it or just through over four decades of wear and tear.
Since that chip stored instructions for how the FDS should communicate with the TMU, its loss meant the latter had no way to work properly. The two Voyager spacecraft were some of the first ever to use volatile memory to store data, so it’s remarkable that they’ve lasted as long as they have. But with the problem identified, a solution could be developed and it was about essentially figuring out which code had been lost and then resending it to be stored on another memory chip.
(Image credit: NASA/JPL-Caltech)
Not that it would be a quick fix. Voyager I is over 15 billion miles away and it takes around 22.5 hours for a radio signal to reach it and then another 22.5 hours for any response to return to Earth—imagine clicking on a desktop icon and waiting for nearly two days for it to activate, and you’ll get a sense of how challenging it is to work with the spacecraft.
NASA can only send part of the required instructions in any one signal but the first batch was sent on April 18. Two days later, a response was received indicating that the memory relocation had gone as planned and the spacecraft could now correctly report its status.
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Over the next few weeks, the engineers will continue to move the code for the FDS into other memory locations and once complete, Voyager I will be able to send scientific data back.
Moar RAM(Image credit: Future)Best DDR5 RAM: the latest and greatestBest DDR4 RAM: affordable and fast
Moar RAM
(Image credit: Future)Best DDR5 RAM: the latest and greatestBest DDR4 RAM: affordable and fast
(Image credit: Future)
Best DDR5 RAM: the latest and greatestBest DDR4 RAM: affordable and fast
We’ll probably never know the ultimate fate of the incredible machine but its discoveries have been an astonishing testament to the skill and ingenuity of NASA scientists and engineers.
Somehow I doubt anything in my current PC will last half as long but if it does start going wonky, I think I know who might be best at fixing it.
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