Pluto flyby July 2015
I was invited to be a member of the Pluto Encounter Science Team for the New Horizons mission. After a decade of using Hubble to search for moons of Pluto (and we discovered 4 of them!) the search continued as New Horizons approached Pluto. Alas, no more moons were found, but it if there had been more it could have been a dust hazard for the spacecraft during the flyby.