Photos from the 4th IAA Planetary Defense Conference (PDC15) – 13th to 17th April 2015
Much more material and video from the conference can be found here.

PD039 PD041
PD001 PD003
PD006 PD021
PD022 PD027
PD028 PD030
PD031 PD010
PD018 PD017
PD024 PD026
PD049 PD033
PD011 PD012
PD014 PD015
PD019 PD020
PD043 PD044
PD045 PD064
PD050 PD051
PD025 PD034
PD048 PD040