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Blog Archive

 

Salacia: As big as Ceres, but much farther away

Posted by Emily Lakdawalla on 2012/06/26 12:27 CDT | 10 comments

A newly published paper shows trans-Neptunian object Salacia to be unexpectedly large; it's somewhere around the tenth largest known thing beyond Neptune. It has a companion one-third its size, making it appear similar to Orcus and Vanth.

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Where are the big Kuiper belt objects?

Posted by Emily Lakdawalla on 2012/02/16 05:35 CST | 8 comments

Earlier today I wrote a post about how to calculate the position of a body in space from its orbital elements. I'm trying to get a big-picture view of what's going on in trans-Neptunian space.

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Visiting the San Diego SpaceUp Unconference

Posted by Mat Kaplan on 2012/02/14 08:38 CST

Emily Lakdawalla and I drove down to the 3rd annual San Diego SpaceUp Unconference on February 4. We had great fun hanging out with the other space geeks.

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Eris and embargoes (or: don't fear Ingelfinger!)

Posted by Emily Lakdawalla on 2011/10/12 04:49 CDT | 3 comments

Last Tuesday at the Division of Planetary Sciences meeting Bruno Sicardy presented the results of his research group's observations of a stellar occultation by Eris.

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Brief notes from Day 2 of the DPS-EPSC meeting

Posted by Emily Lakdawalla on 2011/10/04 11:18 CDT

It's been a very full day at the DPS-EPSC 2011 joint meeting. My day was less full than it might have been, because I overslept and missed most of the morning's session. I really needed the rest though so I think it was probably for the best!

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New Horizons workshop, day 1: Chemistry & climate on Pluto & other cold places

Posted by Emily Lakdawalla on 2011/08/30 11:27 CDT

Today and tomorrow I'm attending the New Horizons Workshop on Icy Surface Processes. The first day was all about the composition of the surface and atmosphere of Pluto, Charon, Triton, and other distant places.

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Meeting today: The infelicitously named "SBAG"

Posted by Emily Lakdawalla on 2011/08/25 01:45 CDT

NASA funds regular meetings of scientists who work on different parts of the solar system to provide scientific input into NASA's future plans. These "analysis groups" are known by their acronyms, all of which sound kind of horrible, but none has quite as terrible-sounding an acronym as "SBAG," usually pronouced "ess-bag," the Small Bodies Assessment Group.

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In their own words

Posted by Emily Lakdawalla on 2011/08/16 08:42 CDT

While doing my daily reading today I was struck by the awesomeness of two recent blog posts. Both were composed not by professional bloggers like me but by professional space explorers, one a scientist and the other an engineer.

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The most exciting citizen science project ever (to me, anyway)

Posted by Emily Lakdawalla on 2011/06/21 08:23 CDT

A guest blogger here recently rounded up the large number of participatory research projects that are collectively known as citizen science. I think these are all very cool and I encourage you to check them out but none of them has yet inspired me to spend my precious time as grunt labor on a gigantic collective project. Until now.

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Observing at the WIYN

Posted by Meg Schwamb on 2011/06/08 02:43 CDT

On May 5 and 6, I had a run on the WIYN (Wisconsin-Indiana-Yale-NOAO) telescope, a 3.5 m telescope, the second largest telescope on Kitt Peak in Arizona.

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South of the Border

Posted by Meg Schwamb on 2011/05/25 08:30 CDT

The last decade has seen an explosion in our understanding of the solar system with the discovery of the largest Kuiper belt objects (KBOs) of comparable size to Pluto.

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Another scientific clarification: Vanth probably not half the mass of Orcus

Posted by Emily Lakdawalla on 2011/01/14 12:16 CST

Earlier this week I got all excited about the Orcus-Vanth system. It turns out there was a math error in the version of the paper that I read, which resulted in the notion that Vanth could be nearly as big as Orcus.

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Eris might be smaller than Pluto after all (but it's still more massive)

Posted by Emily Lakdawalla on 2010/11/08 04:48 CST

Several astronomers pointed their telescope at Eris to watch it pass in front of a background star. Occultations permit precise measurement of the diameters of distant, faint objects, and it turned out that Eris was much smaller than previously thought, so much so that its diameter may turn out to be the same as, or even smaller than, Pluto's.

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New maps of Pluto show pretty amazing amounts of surface change

Posted by Emily Lakdawalla on 2010/02/04 02:17 CST

I just posted my writeup of today's press briefing on a new map of Pluto produced from Hubble images. The main conclusion was that Pluto has shown an astonishing amount of changes across its surface between 1994 and 2002 -- more, in fact, than any other solid surface in the solar system.

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Report #2 from the New Horizons Science Team Meeting

Posted by Ted Stryk on 2010/01/20 06:33 CST

The second report by Ted Stryk from the New Horizons science team meeting, focusing on the search for Kuiper belt object (KBO) targets.

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Report #1 from the New Horizons Science Team Meeting

Posted by Ted Stryk on 2010/01/19 07:55 CST

The New Horizons science team is meeting this week. Ted Stryk was invited to attend the meeting, and he sent the following notes from the first day.

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LPSC: Thursday: Rovers, Titan, Mars, Venus Express, Neptune

Posted by Ted Stryk on 2008/03/14 03:49 CDT

I spent a large portion of the day at the Lunar and Planetary Institute's library and presented my own poster during the poster sessions, so my coverage of Thursday's sessions is limited.

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(Almost) everything you ever wanted to know about New Horizons and Pluto

Posted by Emily Lakdawalla on 2005/12/20 05:56 CST

I was browsing around the Web today looking for material to improve the information we have on our site about Pluto, and discovered that the New Horizons mission has just posted their launch press kit.

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An official pronouncement may be coming about the "what is a planet?" debate

Posted by Emily Lakdawalla on 2005/09/21 02:28 CDT

Since the discovery of 2003 UB313, larger than Pluto, there's been a lively debate going on in many places about what makes a planet. There's now an article in Nature talking about a proposal that would address the controversy

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