All lectures are in the hall at Houge Park. Board of Directors Meeting 6:00-7:30 PM, social time 7:30-8:00 PM, speaker begins at 8 PM.
|Date / Speaker|
|March 11th, 2017
Dr. Peter Jenniskens
|Title: Dance of streams
Description: Astronomers are engaged in far reaching surveys of stars and galaxies, mapping ever larger objects in the universe. Closer to home, the Bay Area is part of a very different type of survey: a night-time surveillance of the night sky to map out our meteor showers throughout the year. Meteor astronomer Dr. Peter Jenniskens of the SETI Institute and NASA Ames Research Center will present the fruit of that labor to date: a movie that shows the dance of meteoroid streams from night to night in the ever changing gravity field of the planets. The observations are occasionally punctuated by unexpected new showers, shower outbursts, and the occasional meteorite fall or satellite reentry. Jenniskens will explain how these maps have given astronomers new insight into the nature of the zodiacal cloud.
|April 8th, 2017
Dr. Gibor Basri
|Title: The Role of Magnetic Fields in the Lives of Stars
Description: Magnetic fields are pervasive in the Universe, and often have very noticeable and important effects on astrophysical phenomena. In particular, essentially all stars are magnetic at some level, and magnetic fields begin to play a role even before the star is born. Young stars are much more active than our Sun today, although solar magnetism has various effects on both the Sun and the Earth. Finally, magnetic fields can also play an important role in the death of stars. I’ll take you on a tour of the role magnetic fields play in stars of different masses and ages, with particular attention to our Sun.