Space Daily July 23, 2026 • 20:30

Jupiter's moon Io is the most volcanically active body in the solar system, with hundreds of active volcanoes that can shoot sulphur plumes more than 500 kilometres above its surface — a landscape so extreme that early Voyager scientists initially mistook the p - Space Daily

The solar system's most violent world was hiding in plain sight, its apocalyptic surface mistaken for instrument failure until scientists realized they were witnessing something unprecedented.

When Voyager 1 flew past Jupiter in March 1979, scientists expected its moon Io to be cold, battered and geologically quiet. Instead, the spacecraft photographed a world with no obvious impact crater… [+5265 chars]

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Jupiter's moon Io is the most volcanically active body in the solar system, with hundreds of active volcanoes that can shoot sulphur plumes more than 500 kilometres above its surface — a landscape so extreme that early Voyager scientists initially mistook the p - Space Daily

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