2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/4170A summary is presented of a symposium held to review recent progress in X-ray astronomy and to discuss prospects for the next generation of X-ray missions. The summary is organized around ten general, astrophysical questions that may provide scientific drivers for the design of new facilities.6 pages. To appear in "New Century of X-ray Astronomy" Proc. Symposium held in Yokohama, Japan (March 6-8 2001) ed. H. Kunieda & H. Inoue San Francisco:ASPAstrophysicstext