The internal structure of <a href="https://en.wikipedia.org/wiki/Titan_(moon)" class="extiw" title="w:Titan (moon)">Titan</a>, the moon of Saturn.
Nasa, <a href="https://en.wikipedia.org/wiki/User:Mysid" class="extiw" title="w:User:Mysid">User:Mysid</a> and <a href="//commons.wikimedia.org/wiki/User:FrancescoA" title="User:FrancescoA">FrancescoA</a>.
2009-04-01
Vectorized in Inkscape by <a href="https://en.wikipedia.org/wiki/User:Mysid" class="extiw" title="w:User:Mysid">User:Mysid</a> from <a rel="nofollow" class="external free" href="http://www.nasa.gov/images/content/144016main_methane030206-250.jpg">http://www.nasa.gov/images/content/144016main_methane030206-250.jpg</a>. French version by <a href="//commons.wikimedia.org/wiki/User:Stanlekub" title="User:Stanlekub">stanlekub</a>.