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DPS 2012, Monday: Icy moons and a four-star exoplanet

Posted by Emily Lakdawalla on 2012/10/15 11:31 CDT | 1 comments

In the first full day of the annual meeting of the Division of Planetary Sciences of the American Astronomical Society, I listened to scientific sessions on icy worlds and on an exoplanet in a four-star system.

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A couple of gems from the archives

Posted by Emily Lakdawalla on 2012/09/10 11:07 CDT | 2 comments

We're still working on migrating content from the old to the new website. This week, that means I am looking, one by one, through some great amateur-processed space images.

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In Honor of JUICE, a New View of Europa

Posted by Ted Stryk on 2012/05/07 05:30 CDT | 2 comments

To celebrate ESA's selection of the JUICE mission to Jupiter, Ted Stryk produced a new global view of Europa from Galileo data.

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Checking up on Jupiter and Saturn

Posted by Emily Lakdawalla on 2012/02/10 01:51 CST

It's amateur astronomers, not professionals, who are shouldering the burden of constant monitoring of the weather on Jupiter and Saturn. What's going on these days in the outer solar system?

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Book Review: Atlas of the Galilean Satellites, by Paul Schenk

Posted by Emily Lakdawalla on 2011/11/18 12:59 CST

Not many subjects remain for which it is possible to assemble everything that we know about it in one book. Even for those subjects for which our knowledge is limited, knowledge seems always to be expanding exponentially. This is not true, however, for the Galilean satellites of Jupiter.

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Is Europa's ice thin or thick? At chaos terrain, it's both!

Posted by Emily Lakdawalla on 2011/11/17 04:32 CST | 6 comments

Among Europa scientists there are two warring factions: the thick-icers and the thin-icers. The question is how thick is the ice shell that overlies Europa's subsurface ocean (the existence of which pretty much everyone agrees on).

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Scale solar system presentation slide, a provisional version for you to review

Posted by Emily Lakdawalla on 2011/09/15 02:18 CDT

I'm preparing a talk for the Pacific Astronomy and Telescope Show here in Pasadena on Sunday afternoon at 1:45. I have spent the morning putting together a slide that I have long wanted to have for presentations.

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Update: Phobos and Jupiter and its moons!

Posted by Emily Lakdawalla on 2011/06/20 03:53 CDT

Remember that neat picture and movie of Phobos passing by Jupiter that I posted last week? Several people asked me where Jupiter's moons were, and I just assumed that they weren't visible. I was wrong; Mars Express spotted Jupiter's moons along with the planet and Mars' moon!

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Galileo's still producing discoveries: A magma ocean within Io!

Posted by Jason Perry on 2011/05/13 11:44 CDT

A fresh report was published online yesterday in Science Express on the discovery of a magma ocean beneath the surface of Io. Big news! This is a paper I've been looking forward to seeing for more than year and half.

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Spotting Jupiter's Moons...with a Solar Telescope!?

Posted by Emily Lakdawalla on 2011/04/06 12:27 CDT

I was astounded to learn this morning that SOHO can not only see Jupiter, it can actually resolve Jupiter's moons (at least its two outer ones) as points of light separate from their planet!

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Mercury: a moon-scale body

Posted by Emily Lakdawalla on 2011/03/17 06:15 CDT

As I wait for the MESSENGER Mercury Orbit Insertion webcast to start, I thought I'd fiddle with some images to point out that Mercury is a bridge between the scales of planets and the scales of moons.

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LPSC 2011: Day 4: Ted Stryk on icy moons and The Moon

Posted by Ted Stryk on 2011/03/17 11:22 CDT

Here are Ted Stryk's notes from the sessions he attended in the afternoon of Thursday, March 10, at the 42nd Lunar and Planetary Science Conference.

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LPSC 2011: Kirby Runyon on Mars, the Moon, Hartley 2, and Ganymede

Posted by Kirby Runyon on 2011/03/15 01:57 CDT

Kirby Runyon, a second-year grad student at Temple University, offered to send me some writeups of selected presentations from last week's Lunar and Planetary Science Conference, and I enthusiastically agreed.

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LPSC 2011: Wanted: Pioneer 10 & 11 digital data

Posted by Emily Lakdawalla on 2011/03/11 01:39 CST

This is both a Lunar and Planetary Science Conference (LPSC) update and a public service announcement. Ted Stryk has been working for years to locate the original Pioneer 10 and 11 image data from the Jupiter and Saturn encounters.

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Report from the 2011 New Horizons Science Team Meeting

Posted by Ted Stryk on 2011/01/24 01:01 CST

The annual New Horizons Science Team Meeting was held last week at NASA's Ames Research Center.

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Bye bye, Kodachrome, but "Kodak moments" will live on in space

Posted by Emily Lakdawalla on 2010/12/31 08:04 CST

This week is the end for Kodachrome film. It's a casualty of the digital revolution.

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Door 22 in the 2010 advent calendar

Posted by Emily Lakdawalla on 2010/12/22 03:32 CST

Time to open the twenty-second door in the advent calendar. Where in the solar system are these degraded craters?

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Door 14 in the 2010 advent calendar

Posted by Emily Lakdawalla on 2010/12/14 05:01 CST

Until the New Year, I'll be opening a door each day onto a different landscape from somewhere in the solar system. Where in the solar system are these red freckles?

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Door 12 in the 2010 advent calendar

Posted by Emily Lakdawalla on 2010/12/12 05:39 CST

Time to open the twelfth door in the advent calendar. Where in the solar system is this trapezoidal mountain?

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Door 3 in the 2010 advent calendar

Posted by Emily Lakdawalla on 2010/12/03 04:20 CST

Time to open the third door in the advent calendar. Until the New Year, I'll be opening a door onto a different landscape from somewhere in the solar system. Where in the solar system is this wispy terrain?

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