Sascha is a U.K.-based trainee staff writer at Live Science. She holds a bachelor’s degree in biology from the University of Southampton in England and a master’s degree in science communication from Imperial College London. Her work has appeared in The Guardian and the health website Zoe.
NASA's Voyager 1 probe is once again sending readable radio signals back to Earth after engineers fixed a computer glitch that caused the spacecraft to malfunction in November.
Voyager 1 is cruising through interstellar space roughly 15 billion miles away from Earth, which means mission control teams have to wait 22.5 hours for their commands to reach the spacecraft and another 22.5 hours for a response. Voyager 1 and its twin probe — Voyager 2, which continues to operate normally after a 2-week blackout last year — were launched almost 47 years ago and are the most distant human-made objects in existence.
Mission controllers could tell the spacecraft was still receiving their commands, however, indicating that its vital systems were operating normally.In early March, after three months of unsuccessful tinkering, NASA engineering teams determined the issue was tied to one of Voyager 1's three onboard computer systems known as the"flight data subsystem" . The FDS is essential for packaging data harvested by the probe before they are sent to Earth, according to NASA's announcement.
By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.Engineers located the glitch by sending a command — or"poke" — that prompted the FDS to try new sequences of code in its software in case the issue could be resolved by skirting a corrupted section. The command triggered a signal that differed from the stream of gibberish the spacecraft had been sending back, and that engineers were able to decode.
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