On Thursday 24 May 2018, Tanja Masson-Zwaan of Leiden University’s International Institute of Air and Space Law and Prof Mahulena Hofmann of the University of Luxembourg had the honour of addressing the King and Queen of the Netherlands and the Grand-Duc and Grand-Duchess of Luxembourg during the State…

On 1 November 2019, the annual awards of the NLF (Nederlands Lucht- en Ruimtevaartfonds) were presented at a Gala Dinner at the Hotel van Oranje in Noordwijk.

Russia recently blew up a defect satellite. As a result, the amount of space debris in Earth orbit has increased.

You can hardly avoid it if you want to quickly implement satellite internet. Elon Musk's company Starlink is

The first fine for space debris has been issued. An American company that had failed to clean up its space junk has been fined $150.000.

The United Arab Emirates has announced that it is to open a so-called ‘Space Court’ which will operate as an arbitral tribunal for space-related disputes.

In 2025 hebben medewerkers en studenten van de Universiteit Leiden veel mooie prijzen ontvangen en belangrijke onderzoekssubsidies binnengehaald.

From a billionaires’ space race to the launch of tens of thousands of minisatellites: space is becoming busier than ever. This means more than enough work for Tanja Masson-Swaan, an assistant professor at the Institute of Air and Space Law at Leiden University. Because who makes the rules and makes…

Recent graduates of the Adv. LL.M. in Air and Space Law presented their paper titled

The Manfred Lachs Space Law Moot Court competition was held in Vienna between 8 and 12 April 2024. This event was organised by the European Centre for Space Law in collaboration with the University of Vienna. The team comprised David Eagleson, Solène Flambeaux and Aleksandra Spyra, current students…

The Earth-Space Symposium is set to take place on 12 and 13 November. This year’s symposium will be hosted by Utrecht University and its theme will be 'Sustainability, Governance, Futures'.

Diplomatic relations between European countries and Russia are on edge due to ongoing satellite disruptions. Tanja Masson-Zwaan, assistant professor, spoke to Dutch public broadcaster NOS: ‘It’s difficult to prevent this happening.’

From 26 August until 5 September 2019, a group of 20 Chinese government officials, industry representatives and academics attended an intensive course on space law and policy at the International Institute of Air and Space Law, organized in cooperation with Avans+ in Breda.

On 28 June, a group of 35 students (13 from Leiden) visited the law faculty as part of the Space Summer School, a 5-day course organised by the LDE Centre 'Space for Science and Society' and NL Space Campus.

The International Institute of Air and Space Law hosted a book launch event at the Leiden Law School on March 20, 2025, featuring the launch of two important publications in the field of air and space law.

On 15 May the Space Law Moot Court Competition was held in the council chamber of Leiden Town Hall, organised by the International Institute of Air and Space Law (IIASL).

Asteroids, pieces of matter orbiting round the sun, have turned out to be extremely valuable. Asteroid Psyche contains a quantity of metals that together are worth more than the entire global economy. NASA is heading for it.

On Friday 12 November 2021, the Net Zero Space initiative was launched at the Paris Peace Forum. The International Institute of Air and Space Law (IIASL) of Leiden University is one of the first supporters to the initiative.

On 27 October 2017 the Netherlands Aerospace Foundation (NLF) announced the nominations for the NLF Research Award. We are proud of the nomination of our alumna Valentina Vecchio for her thesis, entitled ‘Aerospace Additive Manufacturing; Between Industrial Potential and Legal Challenges’.

Before he became Minister of Finance, CDA leader Wopke Hoekstra invested for years in a shell company in the Virgin Islands. This has been revealed in leaked documents known as the Pandora Papers. How exactly does tax avoidance work? And are there other options? Tax lawyers Jan Vleggeert and Tanja…

Leiden University has been intensifying its engagement with partners in Africa.

The CEES Centre regularly hosts (guest) lectures, roundtables, and film screenings.

The methodology helping us to prepare for and shape preferred futures.

Earth and outer space have become increasingly intertwined environmentally, politically, and philosophically, as satellite constellations multiply, lunar activities expand, and aspirations for Mars and beyond gain momentum.

A new report reveals five actions that leaders can take to contribute to economic development, advance global security and sustainability, and make space a safe and globally accessible domain.

The Hague Space Resources Governance Working Group, hosted by the IIASL, has recently agreed on the Draft Building Blocks for the Development of an International Framework on Space Resource Activities and will present the outcome of its work during the NewSpace Europe Conference in Luxembourg. The Executive…

This summer, Leiden, The Hague, Noordwijk and Delft will be hosting the ‘Sizzling Summer of Space’. To tie in with the international Space Studies Programme, all kinds of activities on space exploration are being organised, from a film evening to a Science Café and an exhibition of satellites to the…

Missions to the moon have become popular again. In just one week, a lunar mission from Russia failed while India landed a spacecraft in a historic first. Companies, too, want to go to the moon. But can anyone just go to the moon? Tanja Masson-Zwaan explains the rules of international space law on Dutch…

On 12 and 13 September 2019, the Institute of Tax Law and Economics from Leiden University hosted 29 PhD researchers from around the world to engage into collective discussions at the Multilateral Cooperation in International Tax Law seminar.

Prof. Dr Isabella Diederiks-Verschoor passed away on 17 October 2017 at the age of 102. She was a pioneer of air and space law, both in the Netherlands and all over the world.

EuroScience Open Forum – ESOF - is Europe’s biggest multidisciplinary and prestigious scientific conference. ESOF2022 will take place from 13-16 July 2022 and is hosted by Leiden as the European City of Science (in the Netherlands). The Kamerlingh Onnes Building is one of the locations of the ESOF and…

LEGO creations, a clothesline of visions and a journey into the past and the future: just some of the highlights of Uni-vision day, where creatives developed their vision of the future of study.

Stay in touch with the recent developments at the faculty!

On Thursday 24 May 2018, Tanja Masson-Zwaan of Leiden University’s International Institute of Air and Space Law and Prof Mahulena Hofmann of the University of Luxembourg had the honour of addressing the King and Queen of the Netherlands and the Grand-Duc and Grand-Duchess of Luxembourg during the State…

The International Institute of Air and Space Law is very proud to announce that Judge Peter Tomka has accepted the position of chairman of its International Advisory Board. During the Board meeting on 15 November 2017, Judge Tomka officially succeeded Professor Laurens Jan Brinkhorst as chairman of…

The project Going Dutch investigates why the link between being or becoming Dutch, and knowledge of Standard Dutch is so often taken for granted in public discourse, by diving into its historical roots.

The international legal order is in a process of transformation. But how transforms globalization the international legal order? This research programme provides a clearer framework to analyze this..

On Friday 5 September, to mark our 450th anniversary we celebrated the opening of the faculty year together with the Leiden Revisited alumni event. Combining both annual events was a huge success, especially as staff brought along their family, partner or friends.

The Institutes board and the board of Education of the Institute of Public Administration also include a student member. The student member attends the meetings of the board with and represent the interests of the students. In this message she briefly introduces herself.

One of ECSL’s most successful activities is the ECSL Summer Course on Space Law and Policy, which is open to students of all levels of study, as well as a few young professionals already working in the space or space-related sectors. The course is now in its 31st year and boasts a large family of alumni…

On February 24, 2017, the Institute of Biology Leiden organised the first edition of the Biology Career Event. The career event for third year bachelor and master students was well received by the attendants. ‘I felt that the presenters and people doing the workshops were really trying to help us get…

In 2021, Thijs Bosker and Paul Behrens — both Associate Professors in Environmental Sciences at Leiden University — received funding from the Leiden University Fund and the Gratama Foundation to develop tangible and practical exercises that help people to deal with environmental issues from a local…

The Panama Papers and Paradise Papers provide evidence that companies and individuals are evading tax on a large scale. Worldwide tax agreements can put a stop to this. But for the time being a treaty that will address the problem at its root is not in sight, in the opinion of legal expert Dirk Broekhuijsen.…

A live online New Year’s event on Tuesday 12 January marked the start of the New Year. Dean Joanne van der Leun toasted 2021 and as usual at this event, the annual Meijers prizes and thesis prizes were awarded.

Assistant professor at LUC The Hague, Dr. David Ehrhardt has recently been awarded a Comenius Teaching Fellowship. Winning the Fellowship means that he has been awarded a bursary of fifty thousand euro in order to implement and develop an educational project within LUC.

Leiden University hosted the 47th Telders International Law Moot Court Competition, which took place between 30 May and 1 June 2024.

On 28 and 29 January 2020 the workshop ‘Law, Rights, and Governance in Africa. A look to the Future’ was held at Leiden Law School.

The Leiden University team representing the International Institute of Air and Space Law (IIASL) won the World Finals of the Manfred Lachs Space Law Moot Court Competition that took place in Paris on 20 September 2022.