#Dark and Quiet Skies for Science and Society
from
Tuesday, 9 December 2025 (09:00)
to
Friday, 12 December 2025 (18:00)
Monday, 8 December 2025
Tuesday, 9 December 2025
09:00
Registration and coffee/tea
Registration and coffee/tea
09:00 - 10:00
Room: Boardroom D
10:00
Welcome
Welcome
10:00 - 10:30
Room: Boardroom D
10:30
10:30 - 10:50
Room: Boardroom D
10:50
Keynote - International Astronomical Union
Keynote - International Astronomical Union
10:50 - 11:05
Room: Boardroom D
11:05
Keynote - International Telecommunication Union
Keynote - International Telecommunication Union
11:05 - 11:20
Room: Boardroom D
11:20
Session 1 - impact assessment after 3 years of observations
-
Meredith Rawls
(
University of Washington/Vera C. Rubin Observatory, USA
)
Ammar Eissa Mohammed Abdulla
(
Sharjah Academy for Astronomy, Space Sciences and Technology, UAE
)
Gregory Hellbourg
(
California Institute of Technology, USA
)
Cui Chenzhou
(
National Astronomical Observatories, Chinese Academy of Sciences
)
Piero Benvenuti
(
Chair - Director of IAU Centre for Protection of Dark and Quiet Skies (CPS)
)
Session 1 - impact assessment after 3 years of observations
Meredith Rawls
(
University of Washington/Vera C. Rubin Observatory, USA
)
Ammar Eissa Mohammed Abdulla
(
Sharjah Academy for Astronomy, Space Sciences and Technology, UAE
)
Gregory Hellbourg
(
California Institute of Technology, USA
)
Cui Chenzhou
(
National Astronomical Observatories, Chinese Academy of Sciences
)
Piero Benvenuti
(
Chair - Director of IAU Centre for Protection of Dark and Quiet Skies (CPS)
)
11:20 - 12:45
Room: Boardroom D
12:45
Pitch - impact assessment
-
Narae Hwang
(
Korea Astonomy and Space Science Institute
)
Ericsson López Izurieta
(
Quito Astronomical Observatory, Ecuador
)
Biruk Abte
(
Space science and geospatial institute, Eithiopia
)
Pitch - impact assessment
Narae Hwang
(
Korea Astonomy and Space Science Institute
)
Ericsson López Izurieta
(
Quito Astronomical Observatory, Ecuador
)
Biruk Abte
(
Space science and geospatial institute, Eithiopia
)
12:45 - 13:00
Room: Boardroom D
13:00
Lunch
Lunch
13:00 - 14:00
Room: Cafeteria
14:00
Session 2 - status of astronomers mitigation actions
-
Beatrice Kioko
(
Chair - European Organisation for Astronomical Research in the Southern Hemisphere (ESO)
)
Constance Walker
(
IAU CPS and NSF NOIRLab, USA
)
Olivier Hainaut
(
ESO
)
Erick Meza Quispe
(
Peruvian Space Agency CONIDA
)
Nicolas Cerardi
(
Ecole Polytechnique Fédérale de Lausanne (EPFL) Switzerland
)
Federico Di Vruno
(
SKAO
)
Session 2 - status of astronomers mitigation actions
Beatrice Kioko
(
Chair - European Organisation for Astronomical Research in the Southern Hemisphere (ESO)
)
Constance Walker
(
IAU CPS and NSF NOIRLab, USA
)
Olivier Hainaut
(
ESO
)
Erick Meza Quispe
(
Peruvian Space Agency CONIDA
)
Nicolas Cerardi
(
Ecole Polytechnique Fédérale de Lausanne (EPFL) Switzerland
)
Federico Di Vruno
(
SKAO
)
14:00 - 15:15
Room: Boardroom D
15:15
Pitch - mitigation actions
-
Sarah Thiele
(
Princeton University, USA
)
Stanislav Karpikov
(
StealthTransit Laboratories, Germany
)
Nacera Bekhadda
(
Algerian Space Agency
)
Pitch - mitigation actions
Sarah Thiele
(
Princeton University, USA
)
Stanislav Karpikov
(
StealthTransit Laboratories, Germany
)
Nacera Bekhadda
(
Algerian Space Agency
)
15:15 - 15:30
Room: Boardroom D
15:30
Break
Break
15:30 - 16:00
Room: CO4
16:00
Pitch - other activities impacted
-
Ruskin Hartley
(
DarkSky International, USA
)
Vachik Khachatryan
(
Space42, Armenia
)
Pitch - other activities impacted
Ruskin Hartley
(
DarkSky International, USA
)
Vachik Khachatryan
(
Space42, Armenia
)
16:00 - 16:10
Room: Boardroom D
16:10
keeping a balance to preserve social and cultural use of dark and quiet skies
keeping a balance to preserve social and cultural use of dark and quiet skies
16:10 - 17:40
Room: Boardroom D
17:40
Wrap-up and information for Day-2 & ADJOURN
Wrap-up and information for Day-2 & ADJOURN
17:40 - 18:00
Room: Boardroom D
Wednesday, 10 December 2025
09:30
Coffee/tea
Coffee/tea
09:30 - 10:00
Room: Boardroom D
10:00
satellite constellations
satellite constellations
10:00 - 10:20
Room: Boardroom D
10:20
Session 3 - satellite constellation projects review
-
Ilsa Mroz
(
Planet, USA
)
Natalia Vicente
(
Chair & Global Satellite Operators Association (GSOA)
)
Thibaut Maury Micolier
(
Secure connectivity and space surveillance Unit, European Commission
)
Xu Yanbin
(
China Satellite Network Group Co., Ltd
)
Session 3 - satellite constellation projects review
Ilsa Mroz
(
Planet, USA
)
Natalia Vicente
(
Chair & Global Satellite Operators Association (GSOA)
)
Thibaut Maury Micolier
(
Secure connectivity and space surveillance Unit, European Commission
)
Xu Yanbin
(
China Satellite Network Group Co., Ltd
)
10:20 - 11:05
Room: Boardroom D
11:05
Session 4 - role of academia and governmental organisations to foster mitigation actions
-
Jan Siminski
(
European Space Agency
)
Jessica Dempsey
(
Chair & Director of the Netherlands Institute for Radio Astronomy (ASTRON)
)
Funmilola Oluwafemi
(
National Space Research and Development Agency, Nigeria
)
Roohi Dalal
(
American Astronomical Society, USA
)
Astha .
(
University of Surrey, UK
)
Session 4 - role of academia and governmental organisations to foster mitigation actions
Jan Siminski
(
European Space Agency
)
Jessica Dempsey
(
Chair & Director of the Netherlands Institute for Radio Astronomy (ASTRON)
)
Funmilola Oluwafemi
(
National Space Research and Development Agency, Nigeria
)
Roohi Dalal
(
American Astronomical Society, USA
)
Astha .
(
University of Surrey, UK
)
11:05 - 12:05
Room: Boardroom D
12:05
Pitch - looking to the future and learning from other sectors
-
Kristina Vukosavljević
(
Delft University of Technology, The Netherlands
)
Stefan Wallner
(
Slovak Academy of Sciences
)
Megan Perks
(
University of Southampton, UK
)
Pitch - looking to the future and learning from other sectors
Kristina Vukosavljević
(
Delft University of Technology, The Netherlands
)
Stefan Wallner
(
Slovak Academy of Sciences
)
Megan Perks
(
University of Southampton, UK
)
12:05 - 12:15
Room: Boardroom D
12:15
Group picture
Group picture
12:15 - 12:30
Room: Rotunda
12:30
Lunch
Lunch
12:30 - 13:30
Room: Cafeteria
13:30
satellite industry mitigation: who tried what?
satellite industry mitigation: who tried what?
13:30 - 15:00
Room: Boardroom D
15:00
Pitch - industry mitigation actions
-
Ryan Moodie
(
35 Northumbria, UK
)
Andrew Lawrence
(
University of Edinburgh, UK
)
Agnieszka Sybilska
(
Sybilla Technologies
)
Pitch - industry mitigation actions
Ryan Moodie
(
35 Northumbria, UK
)
Andrew Lawrence
(
University of Edinburgh, UK
)
Agnieszka Sybilska
(
Sybilla Technologies
)
15:00 - 15:15
Room: Boardroom D
15:15
Break
Break
15:15 - 15:45
Room: CO4
15:45
Session 5 - Interactions astronomers, industry and regulators: lessons learnt
-
Siegfried Eggl
(
University of Illinois-Champaign, Austria/USA
)
Mamantha Maheshwarappa
(
Chair & UK Space Agency
)
Tebogo Mashile
(
Department of Science Techonology and Innovation, South Africa
)
Audrey Allison
(
Aerospace Corporation, USA
)
Joan Chepkemoi
(
Kenya Space Agency
)
Session 5 - Interactions astronomers, industry and regulators: lessons learnt
Siegfried Eggl
(
University of Illinois-Champaign, Austria/USA
)
Mamantha Maheshwarappa
(
Chair & UK Space Agency
)
Tebogo Mashile
(
Department of Science Techonology and Innovation, South Africa
)
Audrey Allison
(
Aerospace Corporation, USA
)
Joan Chepkemoi
(
Kenya Space Agency
)
15:45 - 16:45
Room: Boardroom D
16:45
Interactions astronomers/industry: gaps identified and proposals
Interactions astronomers/industry: gaps identified and proposals
16:45 - 17:55
Room: Boardroom D
17:55
Wrap-up and information for Day-3
Wrap-up and information for Day-3
17:55 - 18:00
Room: Boardroom D
18:00
Networking reception
Networking reception
18:00 - 19:30
Room: Mozart Room
Thursday, 11 December 2025
09:30
Coffee/Tea
Coffee/Tea
09:30 - 10:00
Room: CO4
10:00
Outer Space Treaty high-level principles
Outer Space Treaty high-level principles
10:00 - 10:20
Room: Boardroom D
10:20
Session 6 - regulatory initiatives started at national level: status and lessons learnt
-
Marieta Valdivia
(
IAU CPS Policy Hub, National Analysis Group
)
Hafiz Umer Hameed Khan
(
Pakistan Space & Upper Atmosphere Research Commission (SUPARCO)
)
Marcelo Colazo
(
Argentina National Commission on Space Activities (CONAE)
)
Eduardo Unda-Sanzana
(
Universidad de Antofagasta, Director of the Astronomy Center (VITEVA), Chile
)
Yana Yakushina
(
IAU CPS Policy Hub, National Analysis Group
)
Andrew Macpherson
(
Chair, SKAO
)
Nompucuko Nontombana
(
Independent Communications Authority of South Africa
)
Session 6 - regulatory initiatives started at national level: status and lessons learnt
Marieta Valdivia
(
IAU CPS Policy Hub, National Analysis Group
)
Hafiz Umer Hameed Khan
(
Pakistan Space & Upper Atmosphere Research Commission (SUPARCO)
)
Marcelo Colazo
(
Argentina National Commission on Space Activities (CONAE)
)
Eduardo Unda-Sanzana
(
Universidad de Antofagasta, Director of the Astronomy Center (VITEVA), Chile
)
Yana Yakushina
(
IAU CPS Policy Hub, National Analysis Group
)
Andrew Macpherson
(
Chair, SKAO
)
Nompucuko Nontombana
(
Independent Communications Authority of South Africa
)
10:20 - 11:40
Room: Boardroom D
11:40
achieving success at COPUOUS: lessons learnt
achieving success at COPUOUS: lessons learnt
11:40 - 13:00
Room: Boardroom D
13:00
Lunch
Lunch
13:00 - 14:00
Room: Cafeteria
14:00
Pitch: IAC 2026
-
Nazmelis Zengin
(
IAC
)
Pitch: IAC 2026
Nazmelis Zengin
(
IAC
)
14:00 - 14:05
Room: Boardroom D
14:05
Session 7 - Proposals and schedule of preparation until STSC/COPUOS 2026
-
Rafael Moro Aguilar
(
Florida International University, USA/Spain
)
Aaron Boley
(
University of British Columbia, Canada
)
Federico Di Vruno
(
Chair, SKAO
)
Tarcisio Bakaus
(
ANATEL National Telecommuniations Agency of Brazil
)
Richard Green
(
University of Arizona/International Astronomical Union and Group of Friends of the Dark & Quiet Sky, USA
)
Giuliana Rotola
(
International Astronomical Union CPS Policy Hub Co-Lead
)
Session 7 - Proposals and schedule of preparation until STSC/COPUOS 2026
Rafael Moro Aguilar
(
Florida International University, USA/Spain
)
Aaron Boley
(
University of British Columbia, Canada
)
Federico Di Vruno
(
Chair, SKAO
)
Tarcisio Bakaus
(
ANATEL National Telecommuniations Agency of Brazil
)
Richard Green
(
University of Arizona/International Astronomical Union and Group of Friends of the Dark & Quiet Sky, USA
)
Giuliana Rotola
(
International Astronomical Union CPS Policy Hub Co-Lead
)
14:05 - 15:15
Room: Boardroom D
15:15
Break
Break
15:15 - 15:45
Room: CO4
15:45
looking forward to STSC-2026
looking forward to STSC-2026
15:45 - 16:45
Room: Boardroom D
16:45
End of workshop
End of workshop
16:45 - 17:00
Room: Boardroom D
Friday, 12 December 2025
09:00
SCENARIO: "2031: A (Near Earth) Space Odyssey" - FULL AGENDA & SCENARIO AVAILABLE IN THE LEFT COLUMN 'FRIDAY'S SCENARIO'
SCENARIO: "2031: A (Near Earth) Space Odyssey" - FULL AGENDA & SCENARIO AVAILABLE IN THE LEFT COLUMN 'FRIDAY'S SCENARIO'
09:00 - 16:00
Room: CO4, Boardroom D, Workshop rooms.