Approval and application

You’re about to start your Astronomy Pre-Master's programme in Leiden. Make sure you are well prepared and get your studies off to a good start!

Annetje Ottow is stepping down as President of Leiden University’s Executive Board on 1 September 2025 after almost five years in the role. She looks back at the highs and lows – and ahead to what’s next.

Speaking for the Executive Board, Timo Kos reflects on the university’s security policy and what lies ahead. ‘We want to keep our buildings open, but we also need to be able to guarantee the safety of everyone there. It’s a real balancing act.’

Education, Research

Geert de Snoo is making the transition from the Netherlands Institute of Ecology to the management of KNAW. Starting 1 October, the professor of Environmental Biology will begin his role as Director of Research Policy in a new, consensus-based management team.

The Student Cabinet, a shadow cabinet with students from the Dutch universities, has presented its first ‘coalition agreement’. As Minister for New Democracy, Leiden student Zeineb Romdhane says inclusion should form ‘the basis of our democracy’.

Leiden University wants to contribute to a sustainable society, a healthy climate and the reduction of litter and waste. This intention is in alignment with the introduction of our Pure concept, the integral concept for our catering activities.

The United Nations fall short in their recently published guide to address hunger without surpassing the 1.5-degree climate threshold. This initial version is a significant step, according to a group of researchers including those of Leiden University. However, they miss an essential topic: reducing…

A mediation meeting was held today between the University Council and the Executive Board about the appointment procedure for the Vice-Rector of Organisational Development, Erwin Muller. We have managed to resolve the dispute.

On 11 March, pharmaceutical company Janssen received approval to launch its corona vaccine on the European market. This made Janssen the fourth company to be given the green light by the European Medicines Agency. As Lead of the Janssen Campus in the Netherlands, Biology alumnus Bart van Zijll Langhout…

In order to build wind turbines and electric cars, we need tons of magnets. Currently, we import these mainly from China, which means Europe is very dependent on this superpower for the energy transition. This has to change, according to industrial ecologist René Kleijn. In the REEsilience project,…

Petr Steindl works on quantum dots in microcavities for his PhD research. He manipulates single-photons to create complex structures of light. Applications could include quantum communication and gates for quantum computers.

What practical steps can we take to resolve cross-border claims to looted art and prevent illicit trafficking in cultural goods? That's what the European Parliament asked Leiden legal scholar Evelien Campfens. Her advice: develop a registration system, issue art with a ‘passport’ and set up a European…

December marks the 15th anniversary of the Dual PhD Centre (DPC). Director Johannes Tromp and associate professor Mark Dechesne look back and ahead. Dechesne: ‘The DPC forms a 'community of knowledge' in which science and society are connected.’

On Monday, 13 October, Jasper will travel to Brussels with a delegation from Key Region Leiden. Why is this collaboration important? And who will he be having dinner with that same evening in Voorschoten? Jasper shares his account of a long and interesting Monday.

Leiden University has recently received various petitions from students and staff concerning our ties with Israeli universities. We have also held extensive discussions with the University Council in response to questions raised on the subject. We think it important that our partners and research projects…

The Schoof cabinet has presented its budget. As expected, higher education is facing severe cuts. In the coming period, the Executive Board will regularly look at the consequences of what it deems an irresponsible policy.

From a meaningless block of plastic to an advanced component that contributes to the energy transition. The technicians and scientists of our faculty think it out in detail and make it a reality. This special project shows that they need each other.

Computer scientist Matthijs van Leeuwen is one of four science faculty members who obtained the Senior Qualification in Education in 2021. What was that like and what drives him? ‘In my own education I would have liked to see more attention paid to the responsibility that machine learning and data mining…

Thanks to a clever research method, progress is being made in the quest for better tuberculosis medications. Within an American consortium that received a 30 million dollars grant, Leiden researcher Rob van Wijk plays a significant role. ‘The next breakthrough in tuberculosis research will come much…

An international team of astronomers, led by Will Rocha of Leiden Observatory, using the NASA/ESA/CSA James Webb Space Telescope have discovered that the key ingredients for making potentially habitable worlds are present in early-stage protostars, where planets have not yet formed.

Not experiments and lab coats, but computers and artificial intelligence: this year's Nobel Prize in Chemistry went to the inventors of the groundbreaking AI model, AlphaFold. This programme accurately predicts protein structures based on their genetic code—a crucial step in understanding biological…

Crucial information about research, funding or how university rankings are created is often not freely accessible. The Barcelona Declaration on Open Research Information calls for such information to be made open. Professor Ludo Waltman is one of its initiators. What needs to change?

To look for atmospheres around planets outside our solar system is to look for extraterrestrial life. Astronomist Sebastian Zieba used data from the James Webb Space Telescope to study small rocky exoplanets but found no aliens yet. However, his findings are still very interesting for future observations.…

More than a course. That was the aim of the Leiden Tutoring programme. Through weekly tutoring lessons, students did not just earn five EC. They helped Dutch primary-school children from neighbourhoods with a low socioeconomic status.

Martina Huber, Jacqueline Labra Munoz research Alzheimer's disease. They study ferritine, iron storage in the brain. An inbalance of iron could play a role in this form of dementia.

Many students dream of running their own business. But where to start? The Master Honours Challenge ‘Entrepreneurship’ helps students figure things out. ‘Now I can actually go for it.’

Why does a medicine work well for one person, but cause side effects in another? Research by Laura de Jong shows that it’s not just our DNA that matters – other medicines and illnesses can also affect how our bodies respond.

Are you curious about how the human skeleton works? Discover this and more on 3 October in Leiden and on 4 October in The Hague.

Purple clothing and a pride flag flying from all University buildings: Leiden University is once again taking part in Purple Friday. How do people experience this day? We asked some employees and students of the Faculty of Humanities.

For many a first-year, student life has well and truly begun. This also applies to students in The Hague, who were thrown in at the deep end during the HOP introduction week. We paid them a visit on a sunny afternoon at Landgoed Clingendael.

In the short term, no reorganisation is foreseen within the Faculty of Humanities, nor are any compulsory redundancies expected. Nonetheless, structural changes remain necessary. This is evident from the faculty’s draft budget for 2026 and the accompanying financial multi-year outlook.

Connecting scientific fields, enhancing research and teaching, and providing innovative solutions to complex social issues: that is the idea behind interdisciplinary research. What did the university achieve in 2024? A small sample.

A flu virus could cause a pandemic. And then we would be poorly armed because flu viruses are starting to become resistant to flu medications like Tamiflu. Chemist Merijn Vriends successfully worked on an improved version of such medications. He will be awarded his doctorate on September 12th.

Nano-plastics cause malformations. Meiru Wang, researcher at the Institute of Biology Leiden, looked at the extreme effects polystyrene nano-particles could have, using chicken embryos as a model. Her results were quite alarming. Especially as nano-particles are everywhere. In the air, floating through…

The Schoof cabinet has presented its budget. As expected, higher education is facing severe cuts. In the coming period, the Executive Board will regularly look at the consequences of what it deems an irresponsible policy.

In the Port of Rotterdam, tiny industrial pellets leak into the environment, causing a form of pollution that’s hard to trace but highly persistent. Three students of the LDE Sustainability Honours Programme took on the challenge to identify sources of this pollution.

Researchers from Leiden have developed a promising TB vaccine that users can self-administer via a special patch. This could be beneficial for countries with limited health services, says PhD candidate Malene Neustrup.

The design for the METIS instrument for the Extremely Large Telescope (ELT) is final. The European Southern Observatory (ESO) has given the green light for production of all parts of the instrument. It is the first ELT instrument, designed and to be built under Dutch leadership, to formally pass the…

We are living in turbulent times. Various conflicts in other parts of the world at times give rise to feelings of anxiety, unrest and anger in our country too. We also see this happening in our academic community.

On 2 December, the Municipality of Leiden will apologise for the role previous administrations played in colonialism and slavery. A further study will be carried out.

On 8 February, the Universities of the Netherlands (UNL) published the measures that universities themselves are intending to take to manage the influx of international students and enhance the Dutch language skills of lecturers and students.

On 11 July 2024, a gathering was held to celebrate the start of the construction of the new University Sports Centre (USC). Rugby players and a pole dancer from USC Leiden played a role in the celebration. A video was also shown, giving a whistle-stop tour of the new building.

Professor Sarah de Rijcke became the new Rector Magnificus of Leiden University on 15 January 2026. She introduces herself and shares what motivates her to take on this role.

AD(H)D stands for Attention Deficit(-Hyperactivity) Disorder, which is a common disorder that can impact your learning at Leiden University.

Dyslexia is a learning disorder which is common among students and can impact your studies at Leiden University.

Autism spectrum disorder, or ASD, is the term for a range of neurodevelopmental conditions or differences which can impact your studies at Leiden University.

The intake of bachelor’s students from classic immigration countries whose prior education was in the Netherlands does not reflect the growing diversity in society. This is according to data from Statistics Netherlands.

The freedom to be who you are – woman, man, homosexual, heterosexual, transgender, religious, atheist, and so on – is perhaps the Netherlands’ greatest attribute. The principle of equality and the right not to be discriminated against are in the very first article of our constitution. Yet there is a…