1. Editorial

   EditorialNotes 23 December 2009 Pages: 1137 - 1138

2. Kepler and the physics of the heavenly bodies

   • B. S. Shylaja

   Article-In-A-Box 23 December 2009 Pages: 1139 - 1141

3. Snippets of physics

   • T. Padmanabhan

   Series / Article 23 December 2009 Pages: 1144 - 1152

4. The little known story of F = ma and beyond

   • Amitabha Ghosh

   General / Article 23 December 2009 Pages: 1153 - 1165

5. Equations Governing Kepler’s Laws of planetary motion

   • Renuka Ravindran

   General / Article 23 December 2009 Pages: 1166 - 1170

6. Errata

   • D. C. V. Mallik
   • Ambika Karanth

   Erratum 23 December 2009 Pages: 1170 - 1170

7. An example of Bayesian inference in thermal sciences

   • C. Balaji
   • T. Thaseem

   General / Article 23 December 2009 Pages: 1171 - 1182

8. Congruent numbers, elliptic curves, and the passage from the local to the global

   • Chandan Singh Dalawat

   General / Article 23 December 2009 Pages: 1183 - 1205

9. Nature Watch

   • Alok Kumar Mishra

   Feature / Article 23 December 2009 Pages: 1206 - 1209

10. Molecule Matters van der Waals Molecules

    • E. Arunan

    Feature / Article 23 December 2009 Pages: 1210 - 1222

11. Johannes Kepler and the Rudolphine Tables

    • Owen Gingerich

    Classics 23 December 2009 Pages: 1223 - 1233

12. Pulsars

    • Varun H. Murthy

    OriginalPaper 23 December 2009 Pages: 1234 - 1234