1. Multiple impacts in the Earth's cratering history

   • Kent D. Trego

   OriginalPaper Pages: 201 - 205

2. Spatially resolved spectroscopic observations of Jupiter during the 1987 opposition

   • F. Moreno
   • A. Molina

   OriginalPaper Pages: 207 - 219

3. Clusters and packets of grains in comet Halley and the fragmentation of dust

   • H. Boehnhardt

   OriginalPaper Pages: 221 - 226

4. Calculation of the transmittance factor of Bahrain using solar radiation data

   • W. E. Alnaser
   • H. S. Al-Mudifa

   OriginalPaper Pages: 227 - 231

5. Simulation of evolutionary mechanism of planetary rings

   • Hongnan Zhou

   OriginalPaper Pages: 233 - 241

6. Tectonics of Syrtis Major Planum on Mars

   • J. Raitala
   • K. Kauhanen

   OriginalPaper Pages: 243 - 260

7. Rayleigh scattering in planetary atmospheres

   • Tõnu Viik

   OriginalPaper Pages: 261 - 284

8. Notes on an initial satellite system of Neptune

   • Pletser Vladimir

   Letter to the Editor Pages: 285 - 295

9. Extraterrestrial particles and the greenhouse effect

   • N. C. Wickramasinghe
   • F. Hoyle
   • R. Rabilizirov

   Letter to the Editor Pages: 297 - 300