ESA Bulletin Nr. 90

• The Microgravity Facilities for Columbus Programme (G. Reibaldi, P. Behrmann, J. Ives, H. Mundorf & P. Manieri)

• The Ariane-5 Cryogenic Main-Stage Development Tests (J. Gigou, J.Y. Heloret)

• New Forms of Contributions to ESA s Optional Programmes: In-Kind Deliveries (M. Ferrazzani)

• Droit de l'espace, mythe et réalité (G. Lafferranderie)

• The Reform of the Agency's Budget Structure and Charging Policy (K. Hottner & E. Morel de Westgaver)

• 1977-1997: Twenty Years of Software Engineering Standardisation in ESA (M. Jones, C. Mazza, U. K. Mortensen, A. Scheffer)

• The In-Orbit Testing of the European Mobile Services Payload on Italsat-2 (B.J. Clymans, M. Jones A. Wenz)

• Secondary Lithium Batteries for Spacecraft (G. Dudley & J. Verniolle)

• Satellite Navigation Using GPS (T.J. Martín Mur & J.M. Dow)

• SAR Mission Planning for ERS-1 and ERS-2 (S. D'Elia & S. Jutz)

• Programmes under Development and Operations

• In Brief

• Publications