Almost 40 years after launch, Voyager 1 arrived at a frontier it was never meant to reach: the heliopause. It was soon followed by Voyager 2.
For decades, scientists expected the Sun’s influence to fade quietly into the vacuum.
Instead, the the Voyagers discovered a “wall of fire”, a turbulent transition zone where solar wind and interstellar space slammed into one another.
All while braving temperatures of 50,000 Kelvin and tightening magnetic fields, the legendary probes crossed into interstellar space.
In doing so they transformed a theoretical idea into a measured reality, and redefined the edge of our solar system.
Source(s): NASA SVS, NASA JPL, NASA Goddard
Credit to : Territory
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