The impact of new media on 20th century astronomy

This paper offers a few comments on the impact and changing sociology of astronomy information handling over the past century (especially its last third), drifting from individual measurements or records to catalogues and data centres, and moving recently from information hubs to distributed digital research facilities including the current projects of so-called,virtual observatories'. After an introductory part and some notes on personal experience, the paper discusses data centres, methodologies, electronic publishing, as well problems and challenges inherited from the new media: fragility, security and ethics, not to forget the most important one, quality.