Daniel Bell, of Harvard, has said that “The world society is like a set of giant Calder mobiles, shifting in uneasy balance in accordance with the winds of change, but the exact configurations are difficult to capture - especially for twenty-five years from now.” Twenty-five or thirty-five, the number is not important - any look into the future is difficult and risky. In order to get a sense of what the future of astronomy libraries may be, I want to talk about some of the changes that are beginning to take shape and then look at the effect those changes are likely to have on all libraries including those that concern us today — astronomy libraries.