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Once ‘dead’ thrusters on the farthest spacecraft from Earth are in action again

  • A team at NASA's Jet Propulsion Laboratory successfully reactivated Voyager 1's original roll thrusters in early 2025, enabling continued operation of the spacecraft now farthest from Earth in interstellar space.
  • This action followed the thrusters' failure in 2004 due to heater power loss, forcing reliance on backup thrusters now threatened by clogging residue.
  • The fix came just before a scheduled communications pause caused by upgrades to Earth-based antennas managing deep space signals.
  • Mission manager Kareem Badaruddin noted the team was initially confident in backups but needed the revival since clogging could disable them this fall.
  • Restoring the thrusters helps maintain Voyager 1’s orientation and contact until it can resume normal communication next year, preserving the decades-long mission.
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astrobiology.com broke the news in on Wednesday, May 14, 2025.
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