
Its Titan up top and Tethys below.
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on Wednesday, March 26th, 2008 at 11:37 pm and is filed under Saturn, Tethys, Titan.
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March 30th, 2008 at 1:03 am
Is this a composite? I don’t think Titan is actually that close to Saturn, unless this is some kind of false perspective illusion. But still.. that doesn’t look right. Titan is pretty far out from Saturn (according to Wikipedia, it’s about 20 Saturn radii - just over 1.2 million kilometers).
March 30th, 2008 at 11:12 pm
not a composite. its not close to saturn, but likely closer to cassini than saturn is. remember how massive saturn is even if it is far off.
although some images will often have a moon seen from the opposite side and still it appears bigger than i would have expected, considering. there are a few at jupiter where europa and io appear right next to one another and yet one is on the opposite side of jupiter than the other and yet the size of the one further off is not as effected as one would guess.
March 30th, 2008 at 11:13 pm
here is that io/europa pic: http://wanderingspace.net/?p=282
March 31st, 2008 at 10:01 pm
Actually, it might make more sense if Saturn is closer, and Titan is way out in the distance. Yes, Saturn is big, but not so big when seen from titan. I used Celestia to simulate this, and here’s some screenshots I took.
http://www.cityonfire.com/dano/Titan/
April 2nd, 2008 at 9:22 pm
right, so if titan wasn’t all the way behind, but perhaps somewhere in between… it would appear about that large against saturn. you could probably get the exact simulation if you download the celestia cassini mission packet, dial in the same date and turn to face titan. you should see the same composition.
April 4th, 2008 at 11:47 pm
Found the same pic on the Nasa site
http://saturn.jpl.nasa.gov/multimedia/images/image-details.cfm?imageID=3007
“Titan emerges from behind Saturn, while Tethys streaks into view, in this colorful scene. Saturn’s shadow darkens the far arm of the rings near the planet’s limb.”