We present a summary of the last activities of science communication
that have taken place in the Observatorio de la Universidad
Complutense de Madrid (UCM Observatory) on the occasion of the
Third Science Week of the Comunidad Autónoma de Madrid
(3–16 November 2003), including guided tours through the observatory
facilities, solar observations, and several talks. Moreover the
current telescopes, instruments and tools of the UCM Observatory
have allowed us to organize other communicating activities such
as the live observation, together with its internet broadcast,
of total lunar eclipses and other exceptional astronomical events
as the Venus transit that took place in 8 June 2004.