I'm really surprised they haven't done such a mission on Encke yet. It's a fairly obvious target for various explorations because its period is so short (3.3 y

I'm really surprised they haven't done such a mission on Encke yet. It's a fairly obvious target for various explorations because its period is so short (3.3 years). (When I taught in an aerospace museum, one of our simulated space missions was launching a probe into Encke's tail: http://www.museumofflight.org/education/challenger-learning-center http://www.museumofflight.org/education/challenger-learning-... .)