Rosetta is now arriving at Comet 67P.
Other comets have been analyzed to some degree (Giotto, Deep Space 1, Deep Impact, etc.)
So my question is... where I can study the up-to-date theory of comets? Much of what was previously thought (eg. dirty snowball) has been discarded now, but I haven't found a good source describing the current thinking.
Are there any firm predictions that will be tested as Rosetta studies the comet up close?
