2023.10 Blankenbergen - Jaarlijkse bijeenkomst JVS/VVS
2023.10 Nijmegen - Felix run
2023.10 Istanbul - Groupcon
2023.09 Heidelberg - Labor Astrophysik Meeting 2023
2023.09 Oberambach - Summer School ALM / Uni Innsbruck
2023.06 Fuglso - INTERCAT Retreat
2023.08 Dijon - HRMS meeting (JWST mini symposium)
2023.02 Cadiz - COSY meeting on confined systems
2022.10 Helsingoer - INTERCAT Retraite
2022.10 Copenhagen - Niels Bohr Symposium
2022.09 Seoul - Groupcon
2022.07 Visegrade - CPLT2022
2022.06 Lille - Quadmarts 2022
2022.05 Aarhus - INTERCAT
2022.03 Nijmegen - FELIX run
2021.12 Nijmegen - FELIX run
2021.11 Jena - Labor Astrophysik Meeting 2021
2021.09 Capri - online - ECLA2020
2021.09 Sonderbjorg - INTERCAT
2021.09 Cologne - online - HRMS2021
2020.-- Corona
2019.12 Noordwijk - ESTEC lecture
2019.11 Leiden - General lecture for VWO lecturers
2019.11 Leiden - General Lecture for 1st yrs students Biology
2019.11 Cork - General Physics Colloquium
2019.10 Amsterdam - NOVA NW2 Meeting
2019.10 Bad Honnef - German Laboratory Astrophysics Meeting
2019.10 Dortmund - RESOLV
2019.08 Dijon - HRMS
2019.07 Paris - SOLEIL
2019.05 Innsbruck - Inst. fuer Ionenphysik
2019.05 Cambridge - IAU350
2019.02 Tromso - Northern Light Chasing
2019.02 Berlin - TUB colloquium
2018.12 Ringberg - Astrochemistry retraite
2018.11 Paris/St.Aubin - SOLEIL run
2018.11 Paris - EDIBLES meeting
2018.09 Cologne - HRMS meeting
2018.09 Edinburg - EUROPAH midterm
2018.08 Oslo - Kavli Award Ceremony
2018.08 Coimbra - EUCMOS2018
2018.07 Pasadena - Past, present and future astrochemistry
2018.06 Arcachon - Binding energy meeting
2018.05 Paris - OPTIMISM
2018.04 Liverpool - EWASS2018
2018.02 Paris/St. Aubin - SOLEIL run
2018.02 Heidelberg - MPI Physics Colloquium
2018.01 Washington - LAD/AAS meeting
2017.12 Veldhoven - CHAINS2017, astrochemistry focus session
2017.10 Munster - Astroseminar
2017.08 Washington - ACS meeting
2017.07 Leusden - Frontiers of astronomy meeting
2017.06 Egmond aan Zee - CES Summerschool
2017.04 Leiden - LC workshop astronomical and laboratory plasma
2017.02 Leiden - Discovery Talk
2017.02 Cologne - General Astrophysics Colloquium
2017.01 Milton Keynes - General colloquium Open University
2017.01 Aro - COST 1401, Our astrochemical cosmos
2016.11 Madrid - ECLA2016
2016.10 Leiden - ICE Age, the Era of JWST
2016.09 Ringberg - MPI DFG lab astro meeting
2016.07 Andover (NH) - GRC on plasma processing
2016.03 Leiden - LC meeting 'Swedibles'
2016.02 Hannover - Hauptvortrag DPG
2015.11 Innsbruck - Physikalisch-Chemisches Kolloquium
2015.10 Chengdu - iComet
2015.09 Anatalya - TURCMOS2015
2015.08 Dijon - HRMS
2015.07 Hawaii - IAU/GA
2015.06 Boulder - CES2015
2015.04 Eindhoven - FYSICA2015
2015.03 Denver - ACS meeting
2015.01 Kassel - Physikalisches Kolloquium
2014.12 Amsterdam - DAN Midterm
2014.12 Leiden - DIB meeting
2014.09 Duesseldorf - EUCMOS2014
2014.06 Leiden - VOS
2014.06 Leiden - Rotary club
2014.05 San Francisco/Sunnyvale - NASA-ARC/DAN workshop
2014.05 Nijmegen - Marie Curie Colloquium
2014.04 Nieuwegein - Colloquium DIFFER
2014.03 Utrecht - PAC symposium
2014.02 Geleen - Elementary school lecture series
2013.11 Greifswald - Colloquium MPI Plasmaphysik
2013.11 Lelystad - Jeugduniversiteit Museum Nieuw Land
2013.10 Freiburg - Clustertreffen
2013.09 Indianapolis - ACS Meeting
2013.08 Schwaegalp - Cosmochemistry Summerschool
2013.07 Potsdam - Free Radical Meeting
2013.05 Noordwijkerhout - IAU297 The diffuse interstellar bands
2013.04 les Diablerets - Gordon Research Meeting 'Chemistry at Surfaces'
2013.04 Windsor - COST meeting the Chemical Cosmos
2013.03 Leiden - Jeugduniversiteit Museum Boerhaave
2013.03 Groningen - Astrophysical colloquium Kapteyn Institute
2013.02 Kauai - First workshop on laboratory astrophysics
2013.01 Copenhagen - ALMA meeting
2013.01 Nijmegen - Good bye colloquium Prof. Leo Meerts
2012.11 Bonn - DFG/SFB Workshop on Laboratory Astrophysics
2012.11 Neudon - Workshop laboratory based solid state research
2012.11 Sevilla - 2nd national meeting on laboratory/molecular astrophysics
2012.09 Oxford - MOLEC XII
2012.03 Nijmegen - MLF colloquium
2012.01 Nottingham - RAS/RCS