A Hard Rain's A-Gonna Fall

The explosion of a small asteroid near Chelyabinsk in 2013, and numerous near-misses since then (such as the September 2014 close pass by asteroid 2014 RC) serve as reminders that we live in a cosmic shooting gallery. We'll look at the threats posed by Near Earth Objects (NEOs), the strategies for mitigating these hazards, and the key roles that amateur astronomers can play in helping to save the Earth.

Speaker: Brian Day, NASA Ames