A time-lapse of the universe in more detail than ever before: that’s the aim of the NSF–DOE Vera C. Rubin Observatory in Chile, which will unveil its first images of the night sky on 23 June. Researchers at Leiden Observatory have played a major role in making it all possible.

When do we define a piece of nature in the city as a park? And when is something a tree or shrub? It may seem obvious, but in scientific literature the definitions vary quite a bit. That makes comparisons difficult. Environmental scientist Joeri Morpurgo looked at the differences and designed a general…

When designing public spaces, noise is often a neglected issue. Architects and urban planners know little about it; noise experts see it mainly as a problem that should be solved simply by reducing the volume. University lecturer Andrea Giolai (LIAS), researcher Kevin Toksöz Fairbairn (ACPA) and Professor…

Henk Hoekstra and Alessandra Silvestri work on the astronomy and theoretical physics in the Euclid mission. These Dutch researchers are part of the mission.

The new Japanese Ambassador, Michii Rokuichiro, visited Leiden University on 2 March.

Discover how skateboarding transforms cities by reading anthropologist Sander Hölsgens' research. Learn about his two new books exploring skateboarding as a sensory experience and powerful learning tool within areas as diverse as therapy, care, parenting and education.

Connecting space to society and gaining problem-solving experience: that’s the goal of LDE Space & Society, a new honours programme for bachelor’s students in Leiden, Delft and Rotterdam. What does the programme look like? And what do students hope to learn? We visited a kick-off session full of exc…

What started as pioneering work, has evolved over decades to become a renowned institute in 2025 with an internationally acclaimed master's programme. 'Almost everyone involved in the aviation and space sector knows us in Leiden.'

What do climate change and traditional Japanese music have to do with each other? A great deal, university lecturer Andrea Giolai suspects. He has been awarded an NWO grant to study the relationship in more depth.

‘Space Antenna LISA will open an unprecedented window on the Universe,’ says astronomer Elena Maria Rossi. The mission will be the first one to detect Gravitational Waves from space. These can tell us more about the beginning of our Universe and the formation of black holes. With an NWO grant of twelve…

Lecture

Facility

Social

An international team of astronomers led by Matus Rybak (Leiden University) has proven, thanks to accidental double zoom, that millimetre radiation is generated close to the core of a supermassive black hole. Their findings have been accepted for publication in the journal Astronomy & Astrophysics.

During the second episode of this Leiden Law podcast, hosts Juli Wentholt and Ishana Badhai will talk with Tanja Masson-Zwaan about the latest developments in Space Law.

Planets existing in other solar systems contain invaluable information about the origin of planets and life. PhD candidate Yapeng Zhang has studied their atmospheres by looking at their smallest parts: isotopes. With her research she hopes to discover what makes our own solar system unique.

International researchers have, for the first time, pinpointed the moment when planets began to form around a star beyond the Sun. Using the ALMA telescope, in which the European Southern Observatory (ESO) is a partner, and the James Webb Space Telescope, they have observed the creation of the first…

Dr. Andrew Littlejohn has been awarded a Hunt Postdoctoral Fellowship by the Wenner-Gren Foundation for Anthropological Research. The fellowship provides funds for early-career scholars to write and publish significant monographs that will impact the development of anthropology.

As a woman, working in Japan and Korea can be pretty tough, Yorum Beekman discovered. It prompted her to pursue a PhD on the subject: ‘I thought: hey, that’s interesting!’

Students on the Adv. LL.M. Air and Space Law reacted quickly to the news of Ukrainians fleeing the war in Ukraine to neighbouring countries. Filip Draba, who is from Poland, collected donations from the class and, together with additional contributions from family and friends in Poland, he amassed €…

Astronomers and surgeons from Leiden are collaborating with industry to develop an optical instrument that delivers faster, more accurate imaging of tumour tissue and abnormal blood flow during surgery.

It was long thought that the early development of Japanese children's books served mainly as a propaganda tool of the state: the literature was supposed to have been written to shape children into perfect citizens. PhD student Aafke van Ewijk nuances this image. Children's book writers wanted to have…

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.

The new Dutch government must act quickly to take rapid, far-reaching measures in three specific regions to tackle nitrogen emissions. This will create the space for a long-term strategy to deal with other urgent problems and the knot of obligations that the state will need to untangle. These are the…

The Rein Dool painting depicting board members of Leiden University will be moving soon to the Reception Room in the Academy Building, where more people will be able to see it.

Commercial parties offering space travel, space waste, claiming the moon, potentially exploiting resources ... It’s going to get busy in space in the coming years. But there are no clear agreements about this. Tanja Masson-Zwaan, Assistant Professor of Space Law, talked about the topic in Spraakmakers…

Although there is considerable evidence that nature in the city is beneficial to both people and animals, we still do not have an overall picture of those benefits. To rectify that, a Leiden PhD candidate and a student – armed with a cargo bike – are using The Hague as a life-size laboratory.

A pandemic of lianas is sweeping through tropical forests, reducing their ability to store carbon and limiting their role in mitigating climate change. Two recent studies from Leiden University highlight the issue. ‘We now understand why lianas are visible in satellite imagery.’

Lecture

Three Leiden researchers have been awarded a Vici grant by the Dutch Research Council. The funding of up to 1.5 million euros supports ‘talented, adventurous and pioneering researchers’. A total of 39 projects at Dutch institutions will receive a grant.

Debate

Despite an eventful afternoon – with Students for Palestine occupying the Academy Building – political scientist Hélène Landemore gave her Cleveringa Lecture as planned on 26 November. She reflected on the protest and the importance of open debate, within the university and within a democracy.

Lecture

Lecture

In the disk surrounding the young star WISPIT 2, not one but two planets are taking shape. Leiden PhD candidate Richelle van Capelleveen played a key role in this discovery, providing a rare glimpse into the early stages of planetary system formation.

Automated government decisions can be cost-effective. But using algorithms also makes understanding the reasons behind decisions particularly complicated. Dr Melanie Fink, Assistant Professor at Leiden Law School, has received a Veni grant to fund her research into this.

More papers, more grants, more students: constant growth is still the gold standard at universities. Neuroscientists Anne Urai and Claire Kelly argue that this mentality obstructs us in resolving such complex societal problems as the climate crisis. Their alternative? The university as a doughnut.

The European Space Agency (ESA) introduces the members of the European Center for Space Law (ECSL) on its website through interviews with its members. One of those members is Tanja Masson-Zwaan.

Lecture, LIAS After-Lunch Talk Series

PhD defence

Over the past few months, Urban Studies students have been helping to think about the realisation of the Humanities Campus. To test their knowledge in practice, the future urban specialists gave advice on several different aspects, including thermal energy storage and the new central campus building…

In this 'Educatip's column, psychology teachers share their key insights about work. This time: course coordinator Evelien Broekhof received support from teaching assistant Vincent during the last term. ‘I have more room in my schedule now that I don't have to do everything alone anymore.’

A European team of astronomers, led by Leiden-based researcher Konstantinos Migkas, has uncovered a large filament — a long, thread-like structure — of hot gas connecting four clusters of galaxies. This filament is made up of what scientists call the warm-hot intergalactic medium.

The brightness peak of the ring around M87's supermassive black hole has shifted 30 degrees counterclockwise in a year. This is shown by new images released by the Event Horizon Telescope consortium.

Lecture, European Union Seminar

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.