1. Gas flow in the solar nebula leading to the formation of Jupiter

   • Minoru Sekiya
   • Shoken M. Miyama
   • Chushiro Hayashi

   OriginalPaper Pages: 1 - 15

2. A cometary aurora

   • D. A. Mendis

   OriginalPaper Pages: 17 - 20

3. Planetesimal rotations induced by collisions

   • Sonia Clairemidi

   OriginalPaper Pages: 21 - 36

4. Collisions of two solid bodies in Keplerian orbits; new orbits and systematic effects

   • Sonia Clairemidi
   • Françoise Depasse

   OriginalPaper Pages: 37 - 50

5. Light scattering in cometary dust comae

   • Gary Herman
   • Heikki Salo

   OriginalPaper Pages: 51 - 74

6. Latitude dependence of auroral frequency in relation to solar — Terrestrial and interplanetary parameters

   • Y. Liritzis
   • B. Petropoulos

   OriginalPaper Pages: 75 - 91

7. Temperature trends in the stratosphere and lower mesosphere of the Northern Hemisphere

   • C. Varotsos

   Letter to the Editor Pages: 93 - 99