There are 79 known moons of Jupiter, not counting a number of moonlets likely shed from the inner moons, and S/2003 J 24, whose orbital elements have not yet been published. All together, they form a ...

Ganymede’s shadow on Jupiter. Image: NASA/JPL-Caltech/SwRI/MSSSImage processing by Thomas Thomopoulos © CC BY (main image)Image processing by Brian Swift © CC BY ...

"Io represented a big mystery because its surface doesn't hold a record of its history the way that the surfaces of less active moons do." The solar system's most volcanic body, the Jupiter moon ...

These moons are worlds unto themselves. Some, like Europa or Enceladus, have spectacular and perhaps even habitable liquid water oceans. And then there’s Jupiter’s moon, Io. Io is the most ...

These four largest of Jupiter’s 79 moons are known as the Galilean satellites because they were first spotted by the astronomer Galileo Galilei from Italy in 1610. Wishing you clear skies and ...

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Jupiter has overtaken Saturn to have the largest family of moons in the solar system – perhaps fittingly for the biggest planet. Astronomer Scott Sheppard and his team at Carnegie Institution ...

Or perhaps more likely, look at under a microscope. The latest candidate for hosting nearby life is Jupiter’s moon, Io. Let’s take a look at what makes Io special, and what we might hope to ...

Tuesday, April 9: A 2%-lit crescent moon will be below Jupiter, with comet 12P/Pons-Brooks in between. Wednesday, April 10: A 7%-lit crescent moon will be above Jupiter and comet 12P/Pons-Brooks.

The solar system's most volcanic body, the moon of Jupiter Io, has been in turmoil for at least 4.57 billion years, right back to its birth and the infancy of the sun. Those are the findings of a ...