Symposium Lectures / Invited Speakers

Education in Space Science – C.R. Philbrick (USA)
Influx of Meteoric Material into the Atmosphere – U. von Zahn (D)
International Living with a Star – P. Brekke (N)
Gravity-sensing Mechanisms in Plants – M. Braun (D)
Astrophysics and Cosmology with Balloons – P. Carlson (S)
Superpressure Balloons: Performances and Future Scientific Missions – P. Coquerez (F)
ENVISAT: Its Instrumentation and Validation – R. Koopman (ESA)