held at WA1/4rzburg, Germany, September 24 to 29, 2007.

The contributions to the meeting published in this volume discuss, among other subjects, cosmology, high-energy astrophysics, astroparticle physics

gravitational waves, extragalactic and stellar astronomy,

and present the roadmap for astroparticle physics in Europe.

Astronomy meets Astroparticle Physics was the motto of this year's annual symposium of the Astronomische Gesellschaft, held jointly with the biennial workshop on astroparticle physics of the Committee of Astroparticle Physics in Germany. Under the common theme of Cosmic Matter, astronomers and astroparticle physicists had the opportunity to exchange their research results in this rapidly advancing field. Results were put into perspective by discussing the visionary roadmaps for astronomy and astroparticle physics on the European level, resulting from the activities of Astronet and Aspera.

Highlight: Karl-Schwarzschild-Lecture .,. by Rudolf Kippenhahn

The papers published here discuss a wide range of hot topics, including cosmology, high-energy astrophysics, astroparticle physics gravitational waves, extragalactic and stellar astronomy — together representing the roadmap for astroparticle physics in Europe.