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djellison
Posted on: Jul 30 2011, 06:27 AM


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Magellan wasn't designed for it either smile.gif
  Forum: Venus · Post Preview: #176446 · Replies: 736 · Views: 1262518

djellison
Posted on: Jul 29 2011, 08:00 PM


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QUOTE (peter59 @ Jul 29 2011, 12:40 PM) *
Seriously, I did not know that the launch date is so precisely determined. 118 days, when will it be? Nov 24 ?


Each launch opportunity, within the launch window, is calculated to the second, years in advance.
  Forum: MSL · Post Preview: #176418 · Replies: 84 · Views: 94879

djellison
Posted on: Jul 28 2011, 03:34 PM


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QUOTE (Gladstoner @ Jul 28 2011, 02:38 AM) *
BTW, 'arrival' will occur when the new thread is started. smile.gif


Anyone wanting to debate the sol on which we 'arrive' at Cape York....please go away and find another forum.

At some point there will be a new thread. Anyone who actually cares when that is or what it means....probably should seek urgent therapy.

  Forum: Opportunity · Post Preview: #176318 · Replies: 1559 · Views: 801287

djellison
Posted on: Jul 27 2011, 08:47 PM


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An interesting subject - but I would remind people to be wary of the no-politics rule.
  Forum: Chit Chat · Post Preview: #176270 · Replies: 9 · Views: 12622

djellison
Posted on: Jul 27 2011, 03:35 AM


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There is http://missionjuno.swri.edu/
  Forum: Juno · Post Preview: #176228 · Replies: 597 · Views: 607347

djellison
Posted on: Jul 26 2011, 07:48 PM


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QUOTE (peter59 @ Jul 26 2011, 11:41 AM) *
Last preparation for launch is not fascinating ?


For the general public? Not really. For most space enthusiasts...there really isn't much to talk about.

People are not excited because it's not exciting. One defines the other
  Forum: Juno · Post Preview: #176202 · Replies: 597 · Views: 607347

djellison
Posted on: Jul 26 2011, 07:34 PM


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QUOTE (peter59 @ Jul 26 2011, 11:54 AM) *
it is mission to Jupiter.


And gets there 5 years from now. What is there to be excited about right now?
  Forum: Juno · Post Preview: #176200 · Replies: 597 · Views: 607347

djellison
Posted on: Jul 25 2011, 06:17 AM


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The water/beer/vodka theme is a repeating joke by Ken.
  Forum: MSL · Post Preview: #176122 · Replies: 365 · Views: 228351

djellison
Posted on: Jul 22 2011, 03:10 PM


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Anyone who wants a superb primer on Gale should read Jim and Ryan's paper about it

http://marsjournal.org/contents/2010/0004/


  Forum: MSL · Post Preview: #176004 · Replies: 365 · Views: 228351

djellison
Posted on: Jul 22 2011, 03:09 PM


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QUOTE (MahFL @ Jul 22 2011, 06:51 AM) *
Is the plan to climb to the top of the mound ?
What is the hight of the crater wall from the landing elipse ?


Go read the Gale documents ( and there are many ) and the MSL Landing site website. ALL that info has been available for a very long time.

http://marsoweb.nas.nasa.gov/landingsites/...op/program.html
  Forum: MSL · Post Preview: #176003 · Replies: 365 · Views: 228351

djellison
Posted on: Jul 22 2011, 02:29 PM


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QUOTE (Stu @ Jul 22 2011, 04:21 AM) *
Why no pancams?


Data volume, power budget, time constraints....all of the above...who knows...we'll probably get them tomorrow.

  Forum: Opportunity · Post Preview: #175994 · Replies: 1559 · Views: 801287

djellison
Posted on: Jul 22 2011, 02:06 PM


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And its........


Gale

http://mars.jpl.nasa.gov/news/whatsnew/ind...amp;NewsID=1141

  Forum: MSL · Post Preview: #175988 · Replies: 365 · Views: 228351

djellison
Posted on: Jul 22 2011, 04:13 AM


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A precautionary admin note before the announcement tomorrow. There is no 'right' or 'wrong' site. There was no consensus for scientific preference over 5 landing site selection meetings that included hundreds of scientists and hundreds of presentations. Moreover, none fail any qualifier for landing safety.

Any cries of which ever site gets the nod being the 'wrong' choice or that some other site would have been better or that the choice is a mistake or any other such discussion will be dealt with swiftly and firmly.

If you want to bitch and moan - make your own blog or find another forum.

You have all been warned. Myself included.

QUOTE (nprev @ Jul 21 2011, 07:06 PM) *
Landing site to be declared 22 Jul 1400 EDT (1800 GMT)!!!!

http://www.ustream.tv/nasajpl


It's 10 a.m. EDT (1400 UT) for the announcement. 7am our time.
  Forum: MSL · Post Preview: #175966 · Replies: 365 · Views: 228351

djellison
Posted on: Jul 22 2011, 04:11 AM


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QUOTE (Mariner9 @ Jul 21 2011, 07:44 PM) *
I think we have a new image just posted at JPL website. Taken on July 18th.


Already being discussed for a page of this thread - first cited here

http://www.unmannedspaceflight.com/index.p...mp;#entry175945


  Forum: Dawn · Post Preview: #175965 · Replies: 422 · Views: 369705

djellison
Posted on: Jul 20 2011, 11:44 PM


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QUOTE (jekbradbury @ Jul 20 2011, 03:59 PM) *
I see two possibilities. Perhaps Pluto will continue to be the only object in the solar system with a number of discovered natural satellites between two and 13, a fact which might point to a particularly interesting orbital history that could be related to the presence of Charon.


No. There's at least one asteroid with three moons - a quadruple system.

http://www.oca.eu/workshop/Pise/slides/Pisa-Colas.pdf
  Forum: Pluto / KBO · Post Preview: #175875 · Replies: 30 · Views: 89553

djellison
Posted on: Jul 20 2011, 07:51 PM


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QUOTE (Sunspot @ Jul 20 2011, 12:44 PM) *
grrr, one pancam image with bad data drop outs sad.gif


Seriously - after 7.5 years of rover operations - have you not gained a single ounce of patience with which to deal with the intricacies and challenges involved in exploring another world?

I don't think anyone has an avatar that suits their forum persona less than you
  Forum: Opportunity · Post Preview: #175850 · Replies: 1559 · Views: 801287

djellison
Posted on: Jul 20 2011, 03:29 PM


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QUOTE (Stefan @ Jul 20 2011, 07:20 AM) *
Again, I ask you if you think the enlargement of the last image was done badly.


Why is it being done at all? If (as we have been told) there is a constraint on the teams time in producing images for outreach...why waste some of that precious time in un-necessarily enlarging these images?
  Forum: Dawn · Post Preview: #175828 · Replies: 422 · Views: 369705

djellison
Posted on: Jul 14 2011, 08:54 PM


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Take a tiny topographic feature.

Take prevailing winds.

Apply a couple of billion years.

You'll get patterns, lines, features, streaks and all sorts of things that look like they're interconnected.


  Forum: Opportunity · Post Preview: #175575 · Replies: 1559 · Views: 801287

djellison
Posted on: Jul 14 2011, 06:00 AM


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Yup - to stop people attaching garbage, the attachments are limited to certain extensions. We've added a few in the past - and I just added KMZ to the acceptable list.
  Forum: Opportunity · Post Preview: #175539 · Replies: 1559 · Views: 801287

djellison
Posted on: Jul 13 2011, 08:57 PM


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QUOTE (Stu @ Jul 13 2011, 12:43 PM) *
It'll be what it is...


And what it is...isn't post 835
  Forum: Opportunity · Post Preview: #175525 · Replies: 1559 · Views: 801287

djellison
Posted on: Jul 13 2011, 08:32 PM


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QUOTE (Stu @ Jul 13 2011, 12:24 PM) *
but the HiRISE images show some vertical relief,


They show lots of albedo changes, but stereo HiRISE shows you just how much vertical relief there is - and it's only a handful of meters over quite a large area.
  Forum: Opportunity · Post Preview: #175521 · Replies: 1559 · Views: 801287

djellison
Posted on: Jul 13 2011, 08:19 PM


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QUOTE (Tesheiner @ Jul 13 2011, 12:35 PM) *
My impression is that it will look somehow like Home Plate.


Yup - that's all it will be. Ambitions of hills and hillocks are going to be somewhat smashed to pieces.
  Forum: Opportunity · Post Preview: #175518 · Replies: 1559 · Views: 801287

djellison
Posted on: Jul 11 2011, 10:01 PM


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QUOTE (MoreInput @ Jul 11 2011, 02:38 PM) *
Comparing Oppy before Cape York and Spirit before Columbia Hills


Why? One is about 20x taller than the other.
  Forum: Opportunity · Post Preview: #175420 · Replies: 1559 · Views: 801287

djellison
Posted on: Jul 11 2011, 09:34 PM


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QUOTE (MahFL @ Jul 11 2011, 07:09 AM) *
He went on vacation during approach ?........ rolleyes.gif


Would you rather he took it during the year long Vesta encounter....or would you rather he just went without a vacation for 18 months?
  Forum: Dawn · Post Preview: #175417 · Replies: 39 · Views: 61583

djellison
Posted on: Jul 11 2011, 06:52 AM


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QUOTE (Sunspot @ Jul 9 2011, 11:41 PM) *
Why so few drives the last couple of weeks? huh.gif


If you had been paying attention, you would know.

They've been making progress as fast as practical and possible.
  Forum: Opportunity · Post Preview: #175394 · Replies: 1559 · Views: 801287

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