The radio telescope LOFAR, with a major contribution from Leiden Observatory, has produced the most detailed radio map of the Universe ever made. Never before have so many cosmic radio sources been captured in a single survey: 13.7 million.

The Dutch Research Council (NWO) has awarded Vidi grants to Leiden researchers.

Guiding high school students as a mentor at Pre-University College: what is that like? And what does it all entail? As part of the 20th anniversary of PRE-College Leiden, we asked two experienced PRE-mentors about their job - and what makes their work so meaningful. ‘You really see them grow.’

Three international research projects involving Leiden University researchers will receive funding from the Una Europa university alliance.

Memorandum of understanding (MoU) signed between ISGA and Fukushima University during visit in Japan

An international team of astronomers has discovered a large reservoir of hot gas in the cluster-in-formation around the Spiderweb Galaxy. Based partly on that hot gas, the astronomers predict that the cluster-in-formation will grow into one of the largest objects in the universe. A step closer to discovering…

How can we make our cities greener and more people-friendly? Two Campus The Hague projects have secured a grant from the Municipality of The Hague. The researchers and students from both projects are working with city residents to find sustainable solutions to local issues.

On Tuesday, September 17th, the Dutch king, Willem-Alexander, will present the plans of the new government of the Netherlands. This government’s aspirations, led by the party (PVV) of right-wing nationalist Geert Wilders, are mostly defined by budget cuts. One of the sectors receiving such budget cuts…

Frederica Mogherini, Rector of the College of Europe, visited Campus The Hague on 23 November for the official launch of the Europe Hub. This new interdisciplinary platform for research and teaching at Leiden University focuses on the social and governance challenges facing Europe.

Leiden University has received a €50,000 grant from Open Science NL to develop a roadmap for integrating open science into the strategic priorities of various institutes and translating this into human resource (HR) policies.

The Grand Parade was a festive highlight of the 450th anniversary celebration of 3 October. Students and staff members from Leiden University participated with an impressive float.

ESA’s Euclid mission is to reveal the dark side of the Universe. But how? Professor of Observational cosmology Henk Hoekstra explains it in his interview with Space Team Europe and Horizon Magazine. He uses enlightening examples such as… a swimming pool! Listen to Henk Hoekstra to understand how Euclid…

Looking to share your academic results or insights with a global audience? Leiden University is a ‘contributing member’ of the international journalism platform The Conversation. In 2024, this resulted in 51 articles, which together were read by more than 667,000 people.

As of 1 May 2025, Professor Kartica van der Zon has been appointed professor by special appointment of Family Law, Law of Persons and Juvenile Law at the Faculty of Law of the University of Groningen.

Leiden University Libraries (UBL) in partnership with Elsevier hosted a series of online seminars on the challenges involved in achieving reproducibility in research. The seminars aimed to identify best practices that can help to overcome central challenges around reproducibility, and to convey several…

On July 3rd the Leiden University Dialogue in Education Network (LUDIEN) has officially been launched. The network welcomes all who are interested in dialogue as a tool for connection and improved student wellbeing in higher education. The dialogue method is moreover useful to talk about sensitive issues…

Darinka Piqani and Moritz Jesse, both from the Europa Institute at Leiden Law School, each gave two lectures as part of the advanced course 'European Constitutionalism' hosted by Professor Helena Hoffmanová of the Department of Constitutional Law at the Faculty of Law of Charles University, Prague.

Arnold Tukker has been appointed as distinguished visiting professor at Nanjing University in the field of industrial ecology.

From malaria parasites as a vaccine to how top-level bureaucrats reach their decisions: seven researchers from Leiden University have received a Vidi grant from the Dutch Research Council (NWO). This 800,000-euro grant will enable them to develop their own innovative line of research over the next five…

Antibiotic resistance is an economic problem. Pharmaceutical companies cannot earn much from antibiotic research, so they do not invest in it. This makes it important that universities do so, says Ned Buijs.

How has evolution shaped our curiosity? And how does that curiosity ensure that we now have the technological ability to discover whether we are alone in the universe? This was all covered during the celebration of Leiden University’s 449th Dies Natalis.

Social

They dreamed of Brussels, worked hard and finally succeeded: working for Europe. The list of Leiden University alumni in Brussels is long. A few days before the European elections, Julia Gencheva and Vincent Miča talk about how they ended up in Brussels and what their jobs entail.

If your work involves using radioactive materials or X-ray equipment, for example in scientific research or teaching, then you work with ionising radiation. On this page, you will find more information on how to do this safely and responsibly.

How do you get fit after these challenging times? How do you actively start a healthy lifestyle? Healthy University Leiden would like to address these topics during the upcoming from #COVID to #GOFIT Week, which will take place from 21 to 25 June 2021.

Lecture, Global Histories of Knowledge Seminar

In a supplementary decision on 17 May 2022, the Executive Board of Leiden University has concluded that it will publish the titles of seven articles in which there is evidence of malpractice. This concerns a former staff member of the Institute of Psychology. The Executive Board considers it to be in…

Is there a place for machine translation engines like Google Translate within the Faculty of Humanities? Associate professor Lettie Dorst’s new educational website aims to help students and teachers find an answer to this question. ‘The use of AI tools, such as Bing and ChatGPT, shouldn’t be seen as…

PhD ceremonies in the Academy Building will be much easier for family, friends and other non-specialist audience members to follow after the summer. The Doctorate Board is pleased to have decided that as of 1 September, all Leiden PhD candidates will begin their PhD defence with a lay talk. ‘It can…

Alumnus Anoma van der Veere did Japanese studies and talks in this interview about his studies in Leiden and his work as a researcher at the Leiden Asia Centre and as Japanese correspondent in Tokyo.

Protostars, data science, and the James Webb Space Telescope—Adriaan Janssen’s curiosity knows no bounds. As a double bachelor’s student in Physics and Astronomy, he has truly found his calling, underscored by his nomination for the title of Leiden Science Young Talent 2024.

For the third consecutive year, LACDR organized the international symposium on topology, Circuit Topology III, on November 29, 2023. The event aimed to bring together experts from diverse fields, including mathematics, computer science, physics, chemistry, and biomedical sciences, to discuss cutting-edge…

The theme of the opening of this year’s academic year was peace and justice. With the climate crisis and the war in Ukraine, these are turbulent times. During the ceremony those present reflected on what the academic community and universities can mean in times of crisis and conflict.

Does the university value teaching less than research? Can you advance in science without academic awards? Which scholars inspire you? Does the university pay enough attention to both your academic achievements and your personal well-being?

Leiden University, together with the Open University and Universities of the Netherlands, will take up residence in the Spui building at Grote Marktstraat 48-50/Spui 3 in downtown The Hague from 2025. The partners signed the leases on 7 November.

On 14 September the construction of the Spui university building officially began.

As from April 2023 all students at Leiden University, Delft University of Technology and Erasmus University Rotterdam will start using the eduXchange portal to register for a minor.

Eight scientists from Leiden University have been awarded a grant by the Dutch Research Council (NWO). With this Vidi funding, the researchers can set up an innovative line of research and further expand their own research group over the next five years.

An impressive 12 researchers from Leiden University have been awarded an 800,000-euro grant by the Dutch Research Council (NWO). This will enable them to develop their own line of research over the next five years.

Leiden-Delft-Erasmus Universities will celebrate its tenth anniversary in 2022. In recent years, the alliance has expanded to include centres and new programmes as well as a curriculum of its own. What do the next ten years have in store?

Organisation

After nearly five years as President of the Executive Board, Annetje Ottow will be stepping down from the role as of 1 September. During her time as President, she helped shape the university’s strategic direction, strengthening its regional, European and international profile. Sustainability, and dignity…

The Municipality of The Hague, Leiden University and CBRE Investment Management (CBRE IM) will together try to realise a University building in the former Hudson’s Bay premises at Grote Marktstraat 48-50/Spui 3. This will facilitate the growth of Campus The Hague. A cooperation agreement was signed…

Leiden University is celebrating its 450th anniversary in 2025 with a feast for the eyes, ears and spirit. The anniversary year opens with an extra special Dies Natalis on 7 February. Highlights includes an alumni festival, three exhibitions and a canal concert.

Leiden University's humanities have one of the top places in the Times Higher Education Rankings. This year, we were placed 26th.

During the Opening of the Academic Year 2024-2025, we asked guests for their wishes and ideas for Leiden University's anniversary year in 2025.