I presented two lectures as part of the ten-lecture course Astronomy in the Third Millennium, organised by Martin Hendry through Glasgow University's Department of Adult and Continuing Education. This particular talk happened in January--March 2002, but variants of it have appeared, under a couple of different names, in subsequent years. See the DACE course catalogue for its current incarnation.
The notes are available here as PDF files, in three versions:
Let me know if you have any problems with the files.