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Voyager 1 Crosses Heliopause, Challenges Heliosphere Understanding

9/7/2025

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Story summary
  • NASA's Voyager 1 has crossed the heliopause, encountering temperatures of 50,000°C.
  • The nearly 50-year-old spacecraft remains operational, transmitting valuable data.
  • This interstellar “firewall” presents turbulence and high energy, challenging existing heliosphere models.
  • Voyager 1 measures heat via sensors for charged particles and plasma waves.
  • Its robust design enables it to endure extreme conditions, prompting a reevaluation of the heliosphere's dynamics.