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The August 20, 2010 Jupiter fireball -- and the March 5, 1979 one

Posted by Emily Lakdawalla on 2010/08/24 11:36 CDT

Following up on the story I first posted on August 22, the Jupiter impact fireball first noticed by Japanese amateur astronomer Masayuki Tachikawa has been independently confirmed by two other Japanese astronomers.

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Exposing Io's true colors

Posted by Jason Perry on 2010/08/20 05:15 CDT

Thanks to its active volcanic activity and sulfur-rich surface, Io is one of the most colorful worlds yet seen in the Solar System, save the Earth of course

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Voyager at Saturn, one year later

Posted by Emily Lakdawalla on 2010/07/27 02:04 CDT

Here are two newly processed portraits of Saturn, showing the planet just after its equinox.

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Volcanism across the solar system: Io

Posted by Emily Lakdawalla on 2010/07/20 05:33 CDT

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.

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Voyager 2's flipped bit fixed

Posted by Emily Lakdawalla on 2010/05/21 05:12 CDT | 1 comments

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.

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Voyager 2 status update: Yep, it was a flipped bit

Posted by Emily Lakdawalla on 2010/05/17 07:22 CDT

Voyager 2's engineers have confirmed that the problem with the spacecraft was indeed the result of a single flipped bit in its software, as they predicted.

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Update on Voyager 2 status

Posted by Emily Lakdawalla on 2010/05/13 09:51 CDT

Good old Voyager 2; she takes a licking and keeps on ticking.

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Some trouble on Voyager 2

Posted by Emily Lakdawalla on 2010/05/06 10:07 CDT

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.

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Downloading the "First Voyage into the PDS" class

Posted by Emily Lakdawalla on 2010/03/30 04:07 CDT

Here's how to watch the class on how to access Voyager data through the Planetary Data System, which I conducted to a small audience this morning.

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A new view of Callisto

Posted by Emily Lakdawalla on 2010/03/22 04:34 CDT

Here's a lovely amateur-produced color image of Jupiter's moon Callisto, or, as its artist Daniel Macháček calls it, "Titan without weather."

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Pretty pictures: Europa from Galileo and Voyager

Posted by Emily Lakdawalla on 2010/03/12 11:24 CST

For some reason both Jason Perry and Ted Stryk took it upon themselves to produce new, pretty versions of Jupiter's moon Europa this week, so I'm hereby featuring them!

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Twenty years since Voyager's last view

Posted by Emily LakdawallaCharlene Anderson on 2010/02/12 01:17 CST

On Sunday comes the twentieth anniversary of an iconic image from the Voyager mission: the "Pale Blue Dot" photo of Earth caught in a sunbeam, which was captured by Voyager 1 as part of a Solar System Family Portrait.

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Planetary Society Advent Calendar for December 31: Uranus

Posted by Emily Lakdawalla on 2009/12/31 11:06 CST

Did you think I was going to skip Uranus? How could I?

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Planetary Society Advent Calendar for December 28: Ariel

Posted by Emily Lakdawalla on 2009/12/28 12:28 CST

Here's yet another of the moons of Uranus for you: Ariel, a near-twin in diameter to Umbriel, but apparently with more interesting geology.

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Planetary Society Advent Calendar for December 21: Miranda

Posted by Emily Lakdawalla on 2009/12/21 04:09 CST

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.

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Planetary Society Advent Calendar for December 18: Neptune

Posted by Emily Lakdawalla on 2009/12/18 02:19 CST

Here's Neptune, but not quite like you've ever seen it before.

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Planetary Society Advent Calendar for December 17: Proteus

Posted by Emily Lakdawalla on 2009/12/17 12:57 CST

Proteus is a weird name for this world. It's the second-largest moon of Neptune, and so it's named (as are all of Neptune's moons) for deities associated with the sea.

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Planetary Society Advent Calendar for December 10: Triton

Posted by Emily Lakdawalla on 2009/12/10 11:42 CST

Welcome to the tenth post in my "Advent Calendar" -- I am opening a door each day on a different world in the solar system, and I'll be continuing to do so until New Year's Day.

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Planetary Society Advent Calendar for December 7: Jupiter

Posted by Emily Lakdawalla on 2009/12/07 03:11 CST

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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Planetary Society Advent Calendar for December 6: Umbriel

Posted by Emily Lakdawalla on 2009/12/06 08:00 CST

Umbriel is the darkest moon in a pretty dark place in the solar system, the Uranus system.

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