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Stories, updates, insights, and original analysis from The Planetary Society.

Volcanism across the solar system: Io

Three months ago, grandiosely, I announced that I was going to survey volcanism across the solar system, and I began the journey on Earth. Then I failed to follow up.

Voyager 2's flipped bit fixed

A happy ending to this story: JPL reported yesterday evening that the flipped bit in Voyager 2's flight data system software has been successfully toggled back to its correct value.

Some trouble on Voyager 2

Engineers have shifted NASA's Voyager 2 spacecraft into a mode that transmits only spacecraft health and status data while they diagnose an unexpected change in the pattern of returning data.

A new view of Callisto

Here's a lovely amateur-produced color image of Jupiter's moon Callisto, or, as its artist Daniel Macháček calls it,

Planetary Society Advent Calendar for December 21: Miranda

Miranda is the one moon of Uranus for which we have very good images from Voyager 2, and that was a stroke of luck, because low-resolution shots of all of Uranus' moons would have told us that it was, geologically speaking, the most dramatic of the five biggest ones.

Planetary Society Advent Calendar for December 7: Jupiter

Jupiter has been high overhead at sunset for several months, a brilliant light that's easy to spot even when the sky is still bright at dusk; but it's now moving quickly to the west as Earth speeds ahead of Jupiter's more stately march around the Sun.

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