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vonmazur
2005-Mar-23, 11:46 PM
I think that someone (BA?) needs to settle this mini-flap. I was watching the Science channel and in one show they stated that Ganymede was the largest moon, 2 hours later on another program, they said that Titan was the largest moon.......I give up, is this semantic or technical or what???

Dale in Ala

JustAGuy
2005-Mar-23, 11:58 PM
Ganymede is the largest, then Titan. Titan was initially thought to be the largest, but once they figured out how think the atmosphere was, it put it below Ganymede.

Here's a fun graphic:
linky (http://www.geocities.com/i_s_s_alpha/Space_Pics/Terrestrial_Planets_and_Moons.jpg)

vonmazur
2005-Mar-24, 12:03 AM
Thanks: I was beginning to wonder if something was up, maybe it was a plot to cover up something....after all, Iapetus is a death star!!!

Dale in Ala

Bozola
2005-Mar-24, 12:12 AM
Ganymede is the largest, then Titan. Titan was initially thought to be the largest, but once they figured out how think the atmosphere was, it put it below Ganymede.

Here's a fun graphic:
linky (http://www.geocities.com/i_s_s_alpha/Space_Pics/Terrestrial_Planets_and_Moons.jpg)

also : BaBB (http://www.badastronomy.com/phpBB/viewtopic.php?t=17709&highlight=&)

Van Rijn
2005-Mar-24, 01:26 AM
I'd love to know where they said that. I grew up "knowing" that Titan was the largest moon in the solar system, but when Voyager went by Titan in '80, we learned different. This is either quite an old show or they did bad fact checking.
[edited for spelling]

CJSF
2005-Mar-24, 12:38 PM
Ganymede is the largest, then Titan. Titan was initially thought to be the largest, but once they figured out how think the atmosphere was, it put it below Ganymede.

Here's a fun graphic:
linky (http://www.geocities.com/i_s_s_alpha/Space_Pics/Terrestrial_Planets_and_Moons.jpg)

One thing that always sort of disturbs me when I see that graphic is how SMALL something can be and cause massive global catastrophe if it impacts Earth. I mean, look at how small Mimas is compared to Earth! And it's ~400km across! The KT impator's size is estimated at ~10km!

CJSF

vonmazur
2005-Mar-24, 04:12 PM
Glad to see the experts are here! I think the show that refered to Titan was showing an interview of some scientist on the Voyager program, but the interview was filmed in the late 70's or early 80's, and therefore hard to change. (I suppose...) It was like a quote within a quote, with one being older.....

Dale in Ala

Bad Dr Galaxy
2005-Mar-24, 04:31 PM
Yes, nothing sinister or evil here. The two were close in size and better
data resolved the issue. (Titan had an atmosphere! Such a deal!)

I have an excellent DVD called "93 Worlds and Counting" about moons
in the solar system. It is already out of date, of course, although the title
admits it will be. But the main point is that at the very beginning, they
point out that the original thinking, like pre-1960, was that all the moons
were cold, dead, quiet rocks. Kind of like our own. To the delight of many,
and dismay of some, that proved to be spectacularly wrong! Vocanoes on
Io! Titan's atmosphere! Geysers on Triton! Ice rafts on Callisto! Faces
on Mars! Oops, forget that last one . . . I got over-excited . . . :oops:

vonmazur
2005-Mar-24, 04:43 PM
Bad Dr Galaxy: You forgot the Death Star in orbit of Saturn!!!!

Dale in Ala

Bad Dr Galaxy
2005-Mar-24, 04:55 PM
Bad Dr Galaxy: You forgot the Death Star in orbit of Saturn!!!!

Dale in Ala

<sound of heavy breathing>

publiusr
2005-Mar-24, 10:41 PM
Isn't there a moon called Triton as well? Not Titan but Triton?

vonmazur
2005-Mar-24, 10:55 PM
Orbiting Neptune i think....see the above link for the pix of it......

Dale in Ala

Kullat Nunu
2005-Mar-25, 12:28 AM
Isn't there a moon called Triton as well? Not Titan but Triton?

Yes, Triton is a moon of Neptune. Triton and Titan are the only satellites in the Solar System with visible atmospheres. To confuse more, Uranus has a moon called Titania.

publiusr
2005-Mar-31, 11:05 PM
Great...

Inferno
2005-Apr-01, 02:16 AM
Ganymede is the largest, then Titan. Titan was initially thought to be the largest, but once they figured out how think the atmosphere was, it put it below Ganymede.

Here's a fun graphic:
linky (http://www.geocities.com/i_s_s_alpha/Space_Pics/Terrestrial_Planets_and_Moons.jpg)

Haha! Earth rules them all! We shall crush these puny planets and moons! They aren't smarter than us....

mickal555
2005-Apr-01, 09:42 AM
Thanks: I was beginning to wonder if something was up, maybe it was a plot to cover up something....after all, Iapetus is a death star!!!

Dale in Ala

Mimas