By Russell “Rusty” Schweickart, Chairman and Co-founder, B612 Foundation and Apollo 9 Astronaut
Editor’s Note: Rusty Schweickart contacted me with a correction and clarified the probability of asteroid impacts.
Editor: On the first point, my earlier post Fly-by on Feb.15,2013: What can asteroid 2012DA14 tell us about fundraising? incorrectly indicated that asteroid Apophis could have a possible 5.1 megaton impact in 2029 (2.7% chance which subsequently declined). Correction: 510 megatons, not 5.1.
Schweickart: 510 MT would cause regional devastation; e.g. the SF Bay Area or the NYC, CT, NJ metropolitan area. As to lethality… Read more