POTSDAM -- SUNY Potsdam Geology Professor Emeritus Dr. Frank Revetta will offer a free educational series of planetarium shows and seismology workshops this fall.

Planetarium shows are held every Thursday afternoon at 4 p.m., in the College's planetarium, located in the basement of Stowell Hall.

Each show lasts approximately 45 minutes and guests of all ages are welcome.

Attendees are encouraged to arrive early, as the door is locked once each show begins. Food, drink and cell phones are also prohibited. Free parking is available in Lot 6, near Kellas Hall.

The planetarium show schedule is as follows:

Sept. 8: "Circumpolar Constellations"

Sept. 15: "North Star (Polaris)"

Sept. 22: "Spring & Summer Constellations"

Sept. 29: "Worldwide Constellations"

Oct. 6: "Winter Constellations"

Oct. 13: "Brightest Stars"Oct. 20: "How Astronomers Locate Stars"

Oct. 27: "Constellations of the Zodiac"

Nov. 3: "The Sun's Path"

Nov. 10: "The Seasons"

Nov. 17: "The Solar System"

Dec. 1: "Stories of Constellations"

Dec. 8: "Precession"

Dec. 15: "The Sky this Week"

Seismology workshops will be held every Tuesday at 4 p.m. in the Revetta-NYPA Laboratory, located in Timerman Hall Room B23.

The workshops will consist of a series of exercises, videos and experiments in geophysics and seismology.

Attendees will have the opportunity to interpret seismograms of both local and distant earthquakes, and learn how a seismograph works. The use of gravity meters, magnetometers, and seismic and electrical resistivity equipment will also be covered.

The seismology workshop schedule is as follows:

Sept. 13: "How Earthquakes Are Detected"

Sept. 20: "Where Earthquakes Occur"

Sept. 27: "Seismic Waves and the Earth's Interior"

Oct. 4: "Loma Prieta Earthquake"

Oct. 18: "Seismogram Interpretation: Loma Prieta Quake"

Oct. 25: "Northridge Earthquake"

Nov. 1: "Seismogram Interpretation: Northridge Quake"

Nov. 8: "Tsunamis"

Nov. 15: "Local Earthquakes: Video"

Nov. 22: "Local Earthquakes: Exercise"

Nov. 29: "Plate Tectonics"

For more information about the planetarium shows and geophysics/seismology workshops at SUNY Potsdam's Department of Geology, contact Frank Revetta at 267-3441 or revettfa@potsdam.edu, or Roberta Greene at 267-2286 or greenera@potsdam.edu.