At the time, the Earth would have been far closer to the moon than it is today, making it perhaps twice as large in the lunar ...

The result may have been comparable to Jupiter's moon Io, the most volcanic body in the solar system. Early in the history of the solar system, a massive protoplanet plowed into a young Earth.

Juno’s latest discoveries have pulled back the veil on Jupiter’s harsh atmosphere and the fiery volcanic world of Io. The ...

New research reveals it may have spent millions of years as a churning, volcanic world — more like Jupiter’s moon Io than the cold rock we see now. In the early solar system, a massive impact ...

Made with data from the JIRAM instrument aboard NASA’s Juno, this animation shows the south polar region of Jupiter’s moon Io during a 27 December 2024 flyby. The bright spots are locations with ...

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