Space Exploration

Voyager 1 Uncovers Volcanoes on Io

Images taken by the Voyager 1 spacecraft revealed the presence of active volcanism on Io, one of Jupiter's moons. The spacecraft, launched in 1977, flew by Io on March 8, 1979, capturing detailed images that showcased large volcanic plumes and changes on the moon's surface. This discovery shocked scientists and expanded our understanding of planetary geology beyond Earth, demonstrating that Io is the most volcanically active body in the solar system. The data was pivotal in reshaping theories of geologic activity in the outer solar system.

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