[X] My Assistant

[Cugel]

For a long time in history Titan has been considered to be the largest of all moons in our solar system. And rightfully so! Unfortunately, somebody got the crazy idea that the atmosphere of Titan does not count, and indeed, the diameter of the rocky/icy body of Titan is roughly 100 km. less in diameter than that of a pitiful piece of debris called Ganymede orbitting 'That Other Planet'.

So, what would be the biggest planet in the solar system if we don't count atmospheres anymore, huh? Probably not that 'That Other Planet'! It's ridiculous.

I think Titan should be back on the #1 spot of Greatest Moons. ASAP.

What do you think?

[edstrick]

*OPTICALLY*, Titan is the largest moon in the solar system.

The single most important science Voyager 1 did at Titan was the radio-occultation experiment. It precisely measured the diameter and (with one limitation) precisely measured the atmosphere pressure/density/temperature structure.

The limitation was they couldn't tell the % of Argon in the atmosphere, as much as 30% in some early post Voyager models. That changes the mean molecular weight of the atmosphere and slides the whole temperature scale up or down <don't remember which> by a few degrees.