I have followed the Voyager probes with interest since I was a kid. It made a great impression on me and taught me about the importance of all sorts of things (planetary science, rocketry, propulsion, communication, exploration,...)
After a period of debate, it now appears that Voyager 1 has left the solar system. Scientists have debated exactly where the edge of the solar system lies, until now it seems. Between the shift of magnetic fields (from solar to galactic) and the change in flux of particles (fewer from the sun and more from elsewhere) Voyager appears to now be in a region of space where nothing from Earth has ever gone.
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