Near Earth Objects and Earth’s Defense Against Impacts

https://docs.google.com/presentation/d/e/2PACX-1vSfFH9M4XrRLgX369QA2bRebp50qCX62tAlnJI-dUfZ3BpdoIP3wiqjYdOKltT_r8IlduFLoGCld-3O/pub?start=false&loop=false&delayms=60000