Talk:Huygens (spacecraft)

message: The info in the findings section about whether or not there is a liquid ocean is at odds with the info on the main Titan page.
I made some minimal changes to help resolve this to some degree and added a reference to the "Lakes of Titan" article, while preserving some mention of early thinking on the issue.  A more comprehensive revision is really required, however.  — Preceding unsigned comment added by 58.173.242.91 (talk) 00:45, 17 August 2011 (UTC)
thread_title: Findings section

message: "it will be only the second time in history (a Venera-13 recording being the first) that audible sounds from another planetary body have been recorded."
This thing about Venera-13 sounds very interesting but
there's nothing about it on the (quite substantial) V-13
page. I would add it there but a (very) quick google search
reveals nothing. Anyone have a good source for this?
Haukurth 14:09, 14 Jan 2005 (UTC)
replies: text: The info site linked from the main Venera programme article mentions the microphone near the bottom of this page . No recording to listen to alas. adamsan  18:53, 14 Jan 2005 (UTC)
thread_title: Microphone

message: Given its distance from the Sun, plus cloud cover, the light intensity in Titan's atmosphere must be very low. Does anyone know how Huygens managed to capture such clear images - especially during descent, when speed of craft plus spinning would seem to rule out long exposure times ? Gandalf61 09:53, Jan 16, 2005 (UTC)
:During the NASA TV coverage I heard someone say, that the light from the Sun on Titan is about 1000 times dimmer than here on Earth, but still 1000 times brighter than the full Moon. If that is true then there is more than enough light for modern CCD cameras. Awolf002 11:39, 16 Jan 2005 (UTC)
thread_title: Huygens images

message: If this had inline references, this could easily became a FA. Anybody would be willing to fix this?--Piotr Konieczny aka Prokonsul Piotrus Talk 22:34, 29 January 2006 (UTC)
thread_title: References for FA

message: No way is this near-ready for FA. Portions are even still written in the future tense. It needs a recap of the actual scientific findings, which should all be available a year later. Fawcett5 05:54, 12 February 2006 (UTC)
thread_title:  Update badly needed 

message: I like the two articles in Space Science Review from 2002 and I will add the first rsult references from Nature 2005 in short time!!Stone 21:44, 22 February 2006 (UTC)
thread_title:  Reference 

message: Please clean up and add links to the first few paragraphs.  I also don't think the phrase "for lack of a better word" is best used in an encyclopedia.82.25.175.134 18:21, 28 November 2006 (UTC)
thread_title: First paragraphs

message: The first sentence in the last paragraph reads "The Huygens Mission like no other space mission before could benefit from amateur contributions." This is false. What about the Cassini images, or the MER photos? They are also public. The sentence needs revising, maybe to "The Huygens mission benefited  significantly from amateur contributions? I'll change it in a week if no one objects.--Planetary 21:34, 7 January 2007 (UTC)
thread_title:  Amateur contributions 

message: The section on this states the following "The Huygens SSP was developed by the Planetary and Space Sciences Research Institute (PSSRI) of the UK Open University and the Rutherford Appleton Laboratory Space Science Department under the direction of Professor John Zarnecki." Can I ask where this has come from as the work on the SSP was done at the University of Kent under the direction of John Zarnecki who didn't move to the Open University (along with most of the rest of the Space Science Department) until 2000, well after the launch of the probe. Ben W Bell talk 09:23, 1 March 2007 (UTC)
thread_title:  Surface Science Package 

message: The overview makes a reference to "1200 million kilometres".  This is an incorect way to display an SI unit, especially one of a scientific nature.  Would anyone object to me changing it to "1.2 terametres"? --Ceaser 21:42, 16 March 2007 (UTC)
replies: text: That's actually a fairly standard way to represent numbers like that, since "billion" can have different meanings in British and American English. While technically correct, nobody actually uses terameters so most people probably won't understand the unit. We're writing for a general audience wherever possible so we should try to use the most commonly understood units. Bryan Derksen 00:25, 17 March 2007 (UTC)
replies: text:  I concur. Remember the audience. Very few people even in the scientific world use terakilometres, 1200 million kilometers is good enough so people can understand the article. Ben W Bell talk 08:33, 17 March 2007 (UTC)

text: But how will people learn if you don't challenge them?  You've stated that my suggestion is correct and I do agree that most people are not familiar with the term, however, this is a wiki.  Could you not simply link to the appropriate page informing readers of the term they don't know?  Further I would challenge that this is a very good page for this sort of thing.  The information is technical of nature, more so than say a page on a particular government or specific movie.--Ceaser 02:16, 19 March 2007 (UTC)
replies: text: It's not a term that is widely used, even in the scientific community who would be more likely to know of it don't tend to use it. Ben W Bell talk 08:16, 19 March 2007 (UTC)
thread_title:  million kilometres 

message: * Would it be appropriate to include a pronunciation guide early in the article for those of us who have not yet heard it pronounced correctly? Thanks in advance. --RayBirks 20:35, 2 April 2007 (UTC)
replies: text: (pronounced in English (IPA): ; in Dutch: ) would be a good suggestion! I never heard it pronounced well either, even when I try it!--Stone 14:03, 3 April 2007 (UTC)
thread_title:  How is "Huygens" pronounced? 

message: I came here to read about the possibility of terrestrial bacterial contamination of Titan. I found an ESA source commenting on it, perhaps it can have a place in this article; http://www.esa.int/SPECIALS/Cassini-Huygens/SEMAO72VQUD_2.html Rip-Saw 17:22, 20 August 2007 (UTC)
thread_title:  Bacterial Contamination 

message: There should have been a CD-ROM within the Huygens. Does anyone remember this? They collected some messages via Internet back in 1996 (or something) for the CD. Urvabara (talk) 13:15, 24 January 2008 (UTC)
replies: text: OUI, ayant travaillé sur la sonde Huygens, je confirme qu'un CD-Rom gravé avec de très nombreuses informations, dont des messages d'enfants, a été fixé sur la sonde. Il est maintenant sur le sol de Titan.--Friendly, Kasos_fr (talk) 23:10, 24 January 2008 (UTC)
replies: text:  I do not understand. Please, can you translate that to Finnish, Swedish or English? Urvabara (talk) 10:06, 31 January 2008 (UTC)

text: YES. Having worked on the Huygens probe, I confirm that a CD-Rom was fixed on the spacecraft, before it leaved the Friedrichshafen plant of Dornier Flugzeugwerke, probably on march 26 1997, date of the official delivery of the probe to NASA. This CD was engraved with a lot of messages collected on Internet, probably by NASA. But I have no information, where it is in NASA (or a possible web site). But I know some young children in France, in Tourrettes-sur-var, France, who participated.  —Preceding unsigned comment added by Kasos fr (talk • contribs) 14:53, 31 January 2008 (UTC)
replies: text: Thanks! Could someone add this info about the CD-ROM to the main article? Urvabara (talk) 07:05, 2 February 2008 (UTC)
thread_title:  Huygens CD-ROM? 

message: "when Huygens was to descend to Titan, it would have accelerated relative to Cassini, causing its signal to be Doppler-shifted" - this is not quite correct, it's not acceleration that causes Doppler effect, it's the relative velocity along the axis separating the two spacecraft. --Nasorenga (talk) 15:12, 2 April 2008 (UTC)
replies: text: Yes. Perhaps this could be changed to "causing the Doppler shift of it's signal to vary" Vegasbri (talk) 13:57, 20 March 2009 (UTC)

text: Edit made. Vegasbri (talk) 14:03, 20 March 2009 (UTC)
thread_title:  A critical design flaw resolved 

message: The caption on the photo in the infobox currently reads, “A scale replica of the probe, 1.3 metres across”. I assume it means that the replica is the same size as the probe, but if so, why use the term “scale”, which generally means reduced in size but in such a way as to maintain proportions. --Mathew5000 (talk) 19:22, 8 August 2009 (UTC)
thread_title:  infobox photo caption: "scale replica" 

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thread_title: File:Huygens on Titan.jpg Nominated for Deletion

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thread_title: File:Huygens landing site.jpg Nominated for speedy Deletion

message: When describing the data chain from the probe to the earth, I find the use of the word ground confusing.  From the article:
The PSE included the electronics necessary to track the probe, to recover the data gathered during its descent, and to process and deliver the data to the orbiter, from which it transmitted or "downlinked" to the ground.
I think that in this case, it is not immediately clear that "ground" refers to the Earth, as we are talking about a probe that will land on the ground of Titan.  And when I'm flying above another celestial body, (which I am in my head while reading the article) the word ground makes me think of that body.  I wouldn't consider myself to be "above the Earth", even though technically, I always am.  I know that this "ground" term has a special meaning in NASA jargon, but I don't think it's clear, especially to non-Americans.  I think it should be changed from "ground" to "Earth".
:Don't be afraid to be bold and change it yourself. Besides, it's generally a more effective way of generating discussion if there's any one else thinks differently. ChiZeroOne (talk) 14:00, 15 May 2012 (UTC)
thread_title:  The term "Ground" in the Overview 

message: Surface photo description states: In situ image of Titan's surface from Huygens—the only images from a planetary surface beyond Mars which doesn't seem to be true, as Venera 13 provided photos too. Moreover, I can't say that Titan's surface is exactly planetary, but that's only matter of definition.  — Preceding unsigned comment added by 89.69.52.12 (talk) 18:36, 31 March 2014 (UTC)
replies: text: Venera 13 sent images from the surface of Venus, which is not "beyond Mars," if you accept that in this context, "beyond" means "further from the sun than." 174.24.42.240 (talk) 22:53, 5 September 2014 (UTC)
thread_title:  Misinformation in photo description 

message: How many images were transmitted from the surface?  Disappointingly, the article has only one such image.  Where can I go to see more? 174.24.42.240 (talk) 22:53, 5 September 2014 (UTC)
replies: text: +1  67.198.37.17 (talk) 17:31, 10 July 2017 (UTC)
thread_title:  Paucity of surface images 

message: I have commented out a reference in the text to the image of the landing site, as the image was deleted in June. However, as it was deleted for having no source when it did actually give a source I have asked for the image to be restored: user talk:Stefan2#File:Huygens landing site.jpg. If/when the image is restored I will restore it, and the text I commented out, to the article. Thryduulf (talk) 21:03, 12 November 2014 (UTC)
thread_title:  Landing site image 

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message: The article is very slim on the actual science. For example, what is the atmosphere actually composed of? Nitrogen? Something else? Any comments about isotopes? What was the wind profile, in the end? The temperature profile? How opaque were the clouds? How much aerosol was there, and what was it made of? 67.198.37.17 (talk) 17:36, 10 July 2017 (UTC)
thread_title:  Science findings? 

message: Are there more photos available to add to the article and if so, is it appropriate? Elmmapleoakpine (talk) 23:54, 18 September 2017 (UTC)
thread_title:  Photos? 

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