Voyager 1 encountered a wall of fire in deep space

Space · Published 24 October 2026 Swipe more like this →

In short: Forty-five years after launch, the Voyager probes have moved beyond our solar system into the unknown. While the journey was expected to be a quiet transit, the spacecraft recently encountered a massive, scorching obstacle that defies the typical cold of interstellar space.

Launched from Cape Canaveral, Voyager 1 and Voyager 2 are the only human-made objects to ever reach the edge of interstellar space. For decades, they conducted reconnaissance of the outer planets before beginning their current mission to chart the boundaries of our solar system. They are currently moving away from the Sun at a rate exceeding 3 astronomical units (AU) per year, where 1 AU represents the average distance from Earth to the Sun, roughly 93 million miles. The twin probes have provided hundreds of scientific investigations and vivid imagery over their long journey. They are currently exploring the cosmos in different directions.

The probes recently encountered a phenomenon described as a "wall of fire" in the interstellar medium. Spanning over 500 million kilometres (300 million miles), this barrier is enormous. Despite the freezing temperatures typically associated with deep space, this structure's temperature was reported to exceed that of terrestrial fires by dozens of times. This discovery has left scientists searching for explanations regarding the nature of such high-energy events occurring so far from our sun. This massive obstacle is a phenomenon that occurs in space but is impossible to find on Earth. The discovery has left researchers stumped as they analyze the data.

While the probes face these extreme conditions, engineers at NASA’s Jet Propulsion Laboratory are working to prolong the missions. By freeing up power on Voyager 2, they aim to extend the duration of its scientific data collection. These twin spacecraft continue to serve as our primary scouts, carrying the Golden Record—a collection of sounds and images selected by a committee led by Carl Sagan—into the vast reaches of the cosmos. The Golden Record was curated by a committee at Cornell University. These machines continue to provide a delightful adventure for humanity.

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