The famous K/T extinction event (death knell of the dinosaurs) shows that, even today, the collision of Earth with a small world gone astray can refresh the face of our planet. Impacts were much larger and more frequent on the early Earth. In all likelihood, impacts posed the greatest challenge to the survival of early life; and they remain a major threat, today.
Wonderfest and the Mt. Tamalpais Astronomy Program present Planetologist Kevin Zahnle from the NASA-Ames Research Center for a talk on Earth’s status as a “rock star” for powerful impacts from space.
After Dr. Zahnle’s presentation, the San Francisco Amateur Astronomers will provide big telescopes for wonderful close-up views of the heavens.
WHAT: “When Worlds Collide,” a Bay Area Science Festival lecture followed by star gazing
WHO: Dr. Kevin Zahnle, planetologist, NASA-Ames Research Center
WHEN: November 3, 2012; 7:00 – 10:30 PM
WHERE: Cushing Memorial Amphitheater, Mt. Tamalpais State Park, 801 Panoramic Hwy., Mill Valley, CA
HOW: Bring a flashlight, warm clothing, and your curiosity. Call 415-455-5370 if weather is questionable.
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