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Saturn system
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| SpaceEngineer | Date: Thursday, 04.10.2012, 20:56 | Message # 16 |
 Author of Space Engine
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| Equivalent brightnesses of texture can be computed by engine - by averaging all pixels of the "base" texture (256*128, it is also used for procedural planets). Water and clouds should be blended with it before. The function seems to be complicated enough... And this doesn't take into account the atmosphere...
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| SpaceEngineer | Date: Tuesday, 09.10.2012, 12:51 | Message # 17 |
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| Epic video:
http://vimeo.com/24410924
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| Solaris | Date: Tuesday, 09.10.2012, 13:53 | Message # 18 |
 World Builder
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| Quote (SpaceEngineer) Epic video:
Quote (Solaris) I love the last images on this one, simply moons orbiting. 
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| Watsisname | Date: Wednesday, 10.10.2012, 23:42 | Message # 19 |
 Galaxy Architect
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| I really enjoy that video as well, both for the musical selection and the decision to use the raw images that haven't undergone noise removal and "cleaning". The result is quite eerie and captivating. 
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| HarbingerDawn | Date: Friday, 12.10.2012, 16:53 | Message # 20 |
 Cosmic Curator
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| New findings from data gathered when the Huygens probe landed reveal that the surface of Titan is soft, with a thin hard crust on top, similar to what can happen with snow here on Earth. Huygens also kicked up a cloud of dust-like material into the air when it landed.
http://www.space.com/18033-s....ng.html
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| smjjames | Date: Friday, 12.10.2012, 17:08 | Message # 21 |
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| Would you call snow a dust like material if you kicked up powdery snow and couldn't identify it at first (pretend you're a lander probe)? 
I can see astronauts there having methane snowball fights just for fun, unless said snow turned out to be rock hard.....
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| HarbingerDawn | Date: Friday, 12.10.2012, 17:43 | Message # 22 |
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| Quote (smjjames) I can see astronauts there having methane snowball fights just for fun, unless said snow turned out to be rock hard.....
There is obviously soft material there, the surface is covered with it underneath that thin crust, but there is no binding agent to hold the material together to make snowballs. It would be like extra powdery (dry) now, it would just fall apart to dust. You would have to go to some place on Titan that was wet to have a chance at making snowballs.
Quote (smjjames) Would you call snow a dust like material if you kicked up powdery snow and couldn't identify it at first
Yes, probably
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| Watsisname | Date: Friday, 12.10.2012, 23:23 | Message # 23 |
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| Agreed with Harbinger there. The word "snow" describes a crystalline solid that precipitated out of the atmosphere, so unless/until you determine that it was formed in that manner, you can't justify calling it snow. 
According to that article, the 'dust-like material' thrown up by the lander is "most likely organic aerosols that are known to drizzle out of the Titan atmosphere", which in my opinion don't necessarily qualify as snow unless they are crystalline. However, methane snow is a possibility on Titan, at least at certain altitudes where the temperatures are cold enough for methane to crystallize. Analysis of Titan's fluvial valleys also suggest formation by downpours from 'methane storms'. What a crazy world.
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| HarbingerDawn | Date: Saturday, 13.10.2012, 02:26 | Message # 24 |
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| Quote (Watsisname) However, methane snow is a possibility on Titan
At the latitude at which Huygens landed (if I remember correctly) it is too warm even for methane rain. Snow would be out of the question at that location. Titan, even though it is cold, is almost too warm for liquid methane, which is the primary reason why Titan's lakes and seas are found almost exclusively at its winter pole.
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| Solaris | Date: Saturday, 13.10.2012, 23:45 | Message # 25 |
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| HarbingerDawn | Date: Sunday, 14.10.2012, 00:01 | Message # 26 |
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| Wow, that's pretty amazing. Titan from opposite sides at almost exactly the same time. Great image.
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| Aerospacefag | Date: Sunday, 14.10.2012, 01:08 | Message # 27 |
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| HarbingerDawn, Watsisname,
Snowballs are easy to make if outside temperature is a little lower than freezing temperature, as under a slight pressure material melts and fuses crystals of ice together. However, if temperature is significantly lower - like, -20 or -30 C for water snow, it is difficult to make one, because snow refuses to melt under pressure and you have to heat it with your hands.
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| HarbingerDawn | Date: Wednesday, 17.10.2012, 08:02 | Message # 28 |
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| Alpha Centauri AB as seen by Cassini Saturn in the foreground
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Edited by HarbingerDawn - Wednesday, 17.10.2012, 08:02 |
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| HarbingerDawn | Date: Thursday, 18.10.2012, 23:11 | Message # 29 |
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| I have no details about this stunning image; I found it being used as a background image on the Planetary Society's blog page.
Saturn and its rings with Titan in the background
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Edited by HarbingerDawn - Friday, 19.10.2012, 00:20 |
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| Solaris | Date: Friday, 19.10.2012, 00:49 | Message # 30 |
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| One of the most beautiful image of saturn/titan I've ever seen. Absolutely incredible view of the rings, and perfect composition. Thx for sharing !
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