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15 billion miles away, NASA’s Voyager 1 comes back to life using 42-year-old radio system

November 2, 2024

13:00

15 billion miles away, NASA's Voyager 1 comes back to life using  42-year-old radio system

NASA’s Legendary Spacecraft Reconnects from 15 Billion Miles Away

In a remarkable demonstration of engineering ingenuity, NASA successfully reestablished contact with its veteran Voyager 1 spacecraft using radio technology that had been dormant since Jimmy Carter was president.

The silent sentinel speaks again

NASA’s Jet Propulsion Laboratory (JPL) engineers in California achieved a breakthrough on October 24, reviving communication with the 47-year-old spacecraft after its systems unexpectedly went quiet. The solution came from an unexpected source: a backup radio transmitter that hadn’t been activated since 1981.

A long-distance relationship

The challenge of communicating with Voyager 1 is staggering: at more than 15 billion miles from Earth, messages take approximately 23 hours to travel each way. When communication problems began on October 16, engineers faced the daunting task of diagnosing and fixing issues across this vast expanse of space.

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The communication breakdown

The crisis unfolded in stages:

  • October 16: Initial communication disruption
  • October 18: Delayed response received
  • October 19: Complete communication blackout

The technical solution

Investigation revealed that Voyager 1’s fault protection system had automatically switched to a secondary, lower-power transmitter. The spacecraft carries two radio transmitters:

  • The primary X-band system, used for regular communication
  • The backup S-band system, unused since 1981

“Engineers are being cautious because they want to determine whether there are any potential risks to turning on the X-band,” explains Bruce Waggoner, Voyager mission assurance manager, in a statement to CNN. While the S-band solution works, the team considers it a temporary fix while investigating the root cause.

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A pioneer’s legacy

Voyager 1’s achievements stand as landmarks in space exploration:

  • First human-made object to reach interstellar space
  • First spacecraft to cross the heliosphere
  • Discoverer of a new ring around Jupiter
  • Identifier of two new Jovian moons: Thebe and Metis
  • Discoverer of five new moons and the G-Ring at Saturn

Historical context

Despite launching after its twin Voyager 2, the spacecraft’s faster trajectory allowed it to overtake its sibling on December 15, 1977. This speed would eventually carry it beyond the solar system’s boundaries, where the influence of distant stars exceeds that of our Sun.

Looking forward

As NASA engineers work to understand what triggered the fault protection system, they face a delicate balance between maintaining communication and ensuring the spacecraft’s long-term health. The process could take weeks, but patience remains a virtue for a mission that has lasted nearly half a century.

The successful reactivation of decades-old technology serves as a testament to the ingenuity of NASA’s original engineers and the durability of their designs while highlighting the ongoing challenges of maintaining humanity’s most distant explorer.