Visiting Scholar Michel Janssen was interviewed by Ritula Shah for BBC Radio on the auction of the Einstein-Besso manuscript at Christie’s auction house, Paris. The manuscript, which ultimately fetched eleven million euros, comprises a series of calculations using the early version of the field equations of Einstein's general theory of relativity. The aim was to test whether the theory could account for the well-known anomaly in the motion of the perihelion of Mercury.
To commemorate this event, Michel Janssen and Jürgen Renn have published an excerpt of their forthcoming book How Einstein Found His Field Equations. Sources and Interpretation.