Titan And Enceladus, 5 Feb observation |
Titan And Enceladus, 5 Feb observation |
Feb 5 2006, 10:33 PM
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#1
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Nice RGB sequence showing Enceladus passing in front of Titan:
http://saturn.jpl.nasa.gov/multimedia/imag...8/N00049968.jpg http://saturn.jpl.nasa.gov/multimedia/imag...8/N00049967.jpg http://saturn.jpl.nasa.gov/multimedia/imag...8/N00049966.jpg Here the aligned RGB combination: -------------------- I always think before posting! - Marco -
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Feb 5 2006, 11:07 PM
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#2
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
QUOTE (dilo @ Feb 5 2006, 03:33 PM) Nice RGB sequence showing Enceladus passing in front of Titan: http://saturn.jpl.nasa.gov/multimedia/imag...8/N00049968.jpg http://saturn.jpl.nasa.gov/multimedia/imag...8/N00049967.jpg http://saturn.jpl.nasa.gov/multimedia/imag...8/N00049966.jpg Here the aligned RGB combination: Beauty! I don't suppose that you have a version large enough for wallpaper...? -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Feb 5 2006, 11:14 PM
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#3
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
QUOTE (nprev @ Feb 5 2006, 11:07 PM) Sorry, unless you have a 2" monitor... -------------------- I always think before posting! - Marco -
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Guest_Myran_* |
Feb 6 2006, 02:33 AM
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#4
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Guests |
Thank you for posting dilo, it was a good reminder for me what a small world Enceladus really are - amazing it can have all that activity.
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Feb 6 2006, 04:35 AM
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#5
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Junior Member Group: Members Posts: 43 Joined: 10-December 05 Member No.: 605 |
QUOTE it was a good reminder for me what a small world Enceladus really are Yep, I remember this composite of Britain and Enceladus from a while back: Not all that big, really! |
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Feb 6 2006, 12:11 PM
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#6
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Member Group: Members Posts: 809 Joined: 11-March 04 Member No.: 56 |
QUOTE (ermar @ Feb 6 2006, 04:35 AM) Ugh. I do not like these sorts of comparisons between three-dimensional objects and two-dimensional surfaces; they are very deceptive. Yes, Enceladus would "fit inside" the island of Great Britain -- but only if it were half embedded in the earth's crust with the rest of it towering into the sky! A better comparison is of surface area to surface area, not of spherical diameter to surface area. If you could unroll Enceladus surface onto the surface of earth, it would occupy an area slightly smaller than France and Germany combined; that is, the parts of Enceladus we can directly observe are a good deal bigger than Great Britain. |
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Feb 6 2006, 04:56 PM
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#7
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Here's my take on the very cool image, magnified 2x for Your viewing pleasure:
While I'm at it, here's another RGB shot of Titan taken a few weeks ago: -------------------- |
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Feb 6 2006, 08:48 PM
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#8
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Senior Member Group: Moderator Posts: 3241 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
QUOTE (David @ Feb 6 2006, 05:11 AM) Ugh. I do not like these sorts of comparisons between three-dimensional objects and two-dimensional surfaces; they are very deceptive. Yes, Enceladus would "fit inside" the island of Great Britain -- but only if it were half embedded in the earth's crust with the rest of it towering into the sky! A better comparison is of surface area to surface area, not of spherical diameter to surface area. If you could unroll Enceladus surface onto the surface of earth, it would occupy an area slightly smaller than France and Germany combined; that is, the parts of Enceladus we can directly observe are a good deal bigger than Great Britain. that is a much better comparison. At some talks I've given, I compared the surface area to that of Turkey. I'll dig up the graphic. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Feb 6 2006, 10:19 PM
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#9
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Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
QUOTE (volcanopele @ Feb 6 2006, 09:48 PM) that is a much better comparison. At some talks I've given, I compared the surface area to that of Turkey. I'll dig up the graphic. That's a helluva size for a chicken! GM Rhode Island Red? Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Feb 7 2006, 03:16 AM
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#10
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Junior Member Group: Members Posts: 43 Joined: 10-December 05 Member No.: 605 |
The size comparison points are valid, and of course surface area, rather than volume, is the relevant statistic when seeking to do anything with the surface (pin down a vent location, search for a possible landing site, et cetera). Still, keep in mind that according to these standards, Cassini's original picture on the thread is a bad comparison - nowhere does it show relative areas!
Because of the negative reaction to the "comparing a two-dimensional plane to a three-dimensional object," I decided that this time I'd show both as three-dimensional objects (well, as best one can on a flat screen). This way, they'll be equally misrepresented! |
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