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Free Astronomy Lecture: ExoComets | Presidio

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Tuesday, December 19, 2017 - 7:00 pm to 9:30 pm | Cost: FREE
Observation Post at the Presidio | 211 Lincoln Boulevard, San Francisco, CA

Free Astronomy Lecture | Presidio

astronomyOnce monthly, the SFAA hosts distinguished guest speakers who are leaders in the fields of astronomy, physics and related disciplines and they present to SFAA Members the latest developments from cutting-edge scientific programs.

Held in the Randall Museum Theater on the third Wednesday of every month, come early for coffee and a light snack at 7:30 PM followed by the general meeting at 7:45 PM. The lecture begins at 8:00 PM.

Tuesday, December 19, 2017
Free Astronomy Lecture | Presidio

ExoComets: Now You See Them, Now You Don’t

Featured Speaker: Barry Welsh, PhD, UC Berkeley, Space Sciences Laboratory

Minor bodies such as Kuiper Belt Objects, comets and asteroids constitute the rocky, icy debris left over from the planet-building phase of our solar system. The existence of reservoirs of small rocky bodies in orbit around young stellar systems is now well established. The initial protoplanetary disks that contain the reservoir of dust and gas required to form exoplanets are short-lived. The circumstellar debris disk observed around young stars of ages 10-50 Myr are continually replenished by collision and evaporation amongst planetesimals. The gravitational field can potentially enable large numbers of kilometer-sized icy bodies into trajectories directed toward the young central star.

Event Details

Cost: FREE


Categories: Geek Event, Lectures & Workshops, San Francisco
Address: 211 Lincoln Boulevard, San Francisco, CA
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