Dear colleagues, You are cordially invited to attend the seminar below which will be held in hybrid format. Please let me know if you will participate in person at IIASA. Regards, Cynthia *********************************************** Prof. Georges Zaccour, Department of Decision Sciences, GERAD, HEC Montréal, Canada, https://www.gerad.ca/en/people/georges-zaccour Will give a seminar on Tuesday, 14 March from 2-3 pm in the Raiffa Room at IIASA (Laxenburg). Title: Space Debris: Another Tragedy of the Commons? Abstract: Since the successful launch of Sputnik 1 in 1957, the exploitation of space has increased rapidly. Satellites are providing crucial services, e.g., weather forecast, navigation systems, managing disasters, and it would be hard to imagine our daily life without them. Two notable changes are worth mentioning in this area. First, private companies jumped in, that is, launching satellites is no more a state/government business. Second, there are active plans for launching tens of thousands of satellites during the next few years. Inevitably, this will create space congestion, and the multiplication of space debris (objects with no function), especially in low orbits, which could ultimately render space non exploitable physically and/or economically. In this talk, I first discuss some of the main issues related to space debris and remediation strategies. Next, I introduce a dynamic game model that considers the (future) presence of few mega constellations (e.g., Starlink, Kuiper, OneWeb), and derive the conditions for a sustainable exploitation of space, and therefore avoid another tragedy of the commons. (Presentation based on joint work with Pierre Bernhard and Marc Deschamps) We hope to see you there, Stefan Wrzaczek, EF Program [https://st2.zoom.us/static/6.3.11766/image/new/ZoomLogo_110_25.png]<https://zoom.us/> Hi there, Cynthia Festin is inviting you to a scheduled Zoom meeting. Join Zoom Meeting<https://iiasa.zoom.us/j/94875588525> One tap mobile: Austria: +431206093072,,94875588525#<tel:+431206093072,,94875588525> or +4312535501,,94875588525#<tel:+4312535501,,94875588525> Meeting URL: https://iiasa.zoom.us/j/94875588525 Meeting ID: 948 7558 8525 Join by Telephone For higher quality, dial a number based on your current location. Dial: +43 120 609 3072 Austria +43 12 535 501 Austria +43 12 535 502 Austria +43 670 309 0165 Austria +43 72 011 5988 Austria Meeting ID: 948 7558 8525 International numbers<https://iiasa.zoom.us/u/aeDLLtGgMP> Skype for Business (Lync) https://iiasa.zoom.us/skype/94875588525