Aharonian, F.: Cosmology with HESS. Astronomy Colloquium, The University of Chicago, USA (2006)

Popescu, C. C.: Viewing the Dusty Universe. Colloquium at Astronomisches Rechen-Institut, Heidelberg, Germany (2005)

Gabici, S.: Non thermal emissoon from clusters of galaxies. Colloquium at Institute for Astronomy and Astrophysics, University of Tübingen (2005)

Aharonian, F.: TeV Gamma Ray - Neutrino Connections. 2nd International Workshop on "Very Large Volume Neutrino Telescopes", Catania, Italien (2005)

Tuffs, R. J.: Dust Emission from Galaxies: from Observations to Models. Colloquium at Mullard Radio Astronomy Observatory, Cavendish Laboratory, Cambridge, UK (2005)

Popescu, C. C.: The effect of dust on the appearance of the outer disks of spiral galaxies. Workshop on "Outer edges of disk galaxies: a truncated perspective", Leiden, The Netherlands (2005)

Popescu, C. C.: Modelling the ultraviolet/submillimeter spectral energy distributions of normal galaxies. International Workshop on "The Spectral Energy Distribution of Gas-Rich Galaxies: Confronting Models with Data", Heidelberg, Germany (2005)

Tuffs, R. J.: Dust Emission from Galaxies: from Observations to Models. Colloquium at IPAC/Caltech, Pasadena, USA (2005)

Tuffs, R. J.: Dust Emission from Galaxies: from Observations to Models. Colloquium at Space Telescope Science Institute, Baltimore, USA (2005)

Popescu, C. C.: Modelling far-infrared emission from dust in gas-rich galaxies. 79th Annual Scientific Meeting of the German Astronomical Society "The many facets of the Universe - Revelations by New Instruments", Köln, Germany (2005)

Aharonian, F.: Gamma Ray Sources. 9th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2005, Zaragoza, Spain (2005)

Popescu, C. C.: From star-forming galaxies to protoplanetary disks and the origin of life. Colloquium at the Royal Observatory, Edinburgh, UK (2005)

Schoenert, S.: The Germanium Detector Array GERDA for the Search of neutrinoless double beta decay. International School of Nuclear Physics, 27th course Neutrinos in Cosmology, in Astro-, Particle and Nuclear Physics, Erice, Italy (2005)

Gabici, S.: Point-like gamma ray sources as signatures of distant accelerators of ultra high energy cosmic rays. The Origin and Evolution of Cosmic Magnetism, Bologna, Italy (2005)

Kirk, J.; Ball, L.; Johnston, S.: Modelling the gamma-ray emission from PSR B1259-63. 29th International Cosmic Ray Conference, Pune (2005)

Tuffs, R. J.: Dust Emission from Galaxies: from Observations to Models. Colloquium at Steward Observatory, University of Arizona, Tucson, Arizona, USA (2005)

Aharonian, F.: Astrophysics and Cosmology with TeV Gamma Rays. International Workshop "TeV Particle Astrophysics", Fermilab, Batavia, IL, USA (2005)

Schoenert, S.: Double beta decay: what we can learn about new physics ? Graduiertenkolleg of the Universities Tuebingen & Basel, Tuebingen, German (2005)

Aharonian, F.: Astrophysics and Cosmology with TeV Gamma Rays. Colloquium, Fermilab, USA (2005)

Kirk, J.: Relativistic plasmas in pulsar winds. 32nd EPS Plasma Physics Conference, Tarragona, Spain (2005)