Letter from Thomas Gold to Dr Martin Reese, Institute of Astronomy, Madingley Road, Cambridge, England Asks to have 15 minutes at the August 27 meeting to present the 'present status of the star collision theory '. This is mainly a question of showing the M-R diagrams that demonstrate the domains in which things would have to happen, and that make clear that certain proposed processes cannot be considered to occur withour going first through a very energetic collision stage. 15 June 1976