Voyager 2 update


Saw in the news this week that Voyager 2 crossed the hydrogen wall at the edge of the Solar System. I didn’t even know the Solar System had a hydrogen wall! (Sorry, Voyager 1)

Per the linked news source:

“In a historical sense, the old idea that the solar wind will just be gradually whittled away as you go further into interstellar space is simply not true,” Don Gurnett, Iowa physics professor, said in a news release. “We show with Voyager 2 — and previously with Voyager 1 — that there’s a distinct boundary out there. It’s just astonishing how fluids, including plasmas, form boundaries.”


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Featured image: NASA/JPL-Caltech



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