Tijdens de Dies Natalis worden elk jaar de Leidse Universitaire Scriptieprijzen uitgereikt. Elke faculteit selecteert hiervoor haar beste scriptie. De beste scriptie van FGGA is geschreven door Leah Beekhuizen met de titel: ‘De lusten of lasten van radicale collega-belangenbehartigers’

Study support

Astronomer Joseph Callingham and his team have observed for the first time a clear signal from a giant burst from a star outside our solar system. This would have a devastating impact on any unfortunate planet orbiting the star.

Not everything that comes close to a black hole is swallowed by it. Black holes can also hurl material away, and that chance turns out to be considerably bigger than previously thought. Martijn Oei's accidental discovery and his subsequent research on it earned him a cum laude promotion on 12 Decemb…

Exhibition

PhD defence

PhD defence

PhD defence

Astronomers in Leiden have used the Atacama Large Millimeter/submillimeter Array (ALMA) in northern Chile to produce a new detailed image of the centre of our Milky Way. This allows them to investigate the life of stars in the most extreme region of our galaxy. The Leiden scientists, led by Katarzyna…

Arts and culture

How can we sustain dialogue on a deeply divisive issue within our university community? On 16 February 2026, Leiden University hosted "Between the River and the Sea: An Evening with Yousef Sweid", marking the launch of the second season of the student-produced Radio Palestine/Israel podcast.

The Leiden archaeologist Harold Berghuis was closely involved in archaeological discoveries off the coast of Java. Skull fragments and other fossil remains provide new insights into the world of Homo erectus. The discovery was the subject of numerous news reports.

The supermassive black hole at the center of the Circinus galaxy is being fed with gas by two spiral arms. This is what PhD candidate Wout Goesaert discovered. But only a small percentage disappears into the black hole, the rest is ejected.

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

Audio podcasts or audio recordings have a broad range of opportunities in education. Podcasts can be used to transfer knowledge (audio lectures), record interviews, record instructions for a field trip or to make a short radio documentary on location. Podcasts are a flexible medium, the small file size…

If your work allows it, you can work partly from home and partly at the University. How this combination of working from home and at the University will turn out for you depends on your own working activities and situation and those of your team. This means that tailor-made solutions are needed.

For over a year now, the James Webb Telescope has been sending stunning images that exceed astronomers’ expectations. The photos are fascinating to see, but what exactly are we looking at? Assistant professor Melissa McClure explains.

Working in a laboratory is different from working in an office. Some of the rules that apply when working in or around a laboratory are given below.

On March 13, Dr. Erik Deul passed away at the age of 67. He leaves behind his wife Wilma, children Caroline and Wouter, and grandchildren Joris, Stach, Viggo, Archie and and a granddaughter expected later this year. Erik served as head of ICT at Leiden Observatory for 35 years, and later also at the…

Today, ESA’s Gaia mission releases its new treasure trove of data about our home galaxy. Astronomers, led by the Leiden astronomer Anthony Brown, describe strange ‘starquakes’, stellar DNA, asymmetric motions and other fascinating insights in this most detailed Milky Way survey to date.

Space telescope Euclid is capable of unravelling the secrets of the universe. That is what the images published by ESA today show, according to astronomers working with the telescope's data. The images exceed all expectations. Scientists within the Euclid consortium, including astronomers Henk Hoekstra…

The first full-colour images of the cosmos from ESA's space telescope Euclid were presented today. Never before has a telescope been able to take such crystal-clear astronomical images of such a large part of the sky and so far into the deep universe. The five images illustrate Euclid's full potential;…

On Monday 28 June 2021, a text based on an interview with Christa Tobler appeared in the Hofvijver (Montesquieu Instituut) on the relationship between the European Union and Switzerland, in particular after the decision of the Swiss Federal Government to refrain from signing an agreement on institutional…

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.

Astronomers have captured a new deep field of Pandora's Cluster (Abell 2744) with the James Webb Space Telescope. The images show never-before-seen details. The results are described in four scientific papers. Leiden astronomers Marijn Franx and Mariska Kriek collaborated on the study. 'This opens a…

Personal development, Working effectively

Leiden Observatory has achieved a rare feat: two of its research teams have been awarded prestigious ALMA Large Programmes, allowing them to study how galaxies formed and evolved in the early Universe using cutting-edge telescope observations.

Dark matter. Something invisible that, according to calculations, comprises about 85% of the matter in the universe. With an ERC Advanced Grant of €2.5 million, Professor of Observational Cosmology Henk Hoekstra will map out even more precisely where this dark matter is to be found.

The two instruments of ESA's space telescope Euclid have taken their first test images. The first images indicate that the space telescope will achieve the scientific goals for which it was designed - and possibly much more. Euclid will create a 3D map of a third of the sky, allowing scientists to study…

An international team of astronomers, including Leiden PhD student Elia Pizzati, has observed several ancient quasars that, surprisingly, appear to be floating alone in the early universe (less than a billion years after the Big Bang). Until now, astronomers, based on models, assumed that quasars are…

Four researchers from Leiden University have been awarded prestigious Vici grants the Dutch Research Council (NWO) has announced. The honoured applications are from researchers at the Faculty of Social and Behavioural Sciences, Leiden Observatory, the LUMC and the Faculty of Archaeology.

Not only dark matter, but also ordinary matter and dark energy are tracked in the largest ever cosmological computer simulation ever. In the FLAMINGO simulations, you can see virtual galaxies and clusters of galaxies emerging over the course of billions of years. This is no easy task: with more than…

For the first time, we’re seeing what Euclid sees. The telescope’s initial observations have provided a wealth of new information about our universe. But according to cosmologist Alessandra Silvestri, this is just the beginning. The research helps us gain a deeper understanding of the past, present,…

ESA’s space telescope Gaia, which maps the Milky Way, completes its active phase of scanning the sky on 15 January. Over the past decade, Gaia has made more than three trillion observations of about two billion stars and other cosmic objects. ‘Gaia is already the discovery machine of the decade,’ Leiden…

Maarten Schrama (CML) has won the Teacher of the Year Award 2021. During a lunch with fellow nominees, Schrama received a cheque worth 5,000 euros from student assessor Joost Barendse to spend on educational activities.

Research

Every year Leiden University organises a number of events where our researchers share their knowledge with an audience of all ages. We are also involved as a partner in a number of local and national events. Fancy joining in? See who to contact below.

If a researcher has appeared on the TV or radio or in a newspaper, for example, you can create an ‘In the media’ page referring to this. How do you write a good ‘In the media’ page? Below are some guidelines.

How are supermassive black holes born? That is the question astronomer Elena Maria Rossi is trying to answer. But how do you investigate something you cannot see?

An international team of astronomers has shown that a white dwarf and a red dwarf orbiting each other every two hours are emitting radio pulses. Through the discovery, astronomers now know that the monopoly on bright radio bursts is not solely held by neutron stars. The team of international scientists…

Controlling fire was a turning point in the development of human civilisation. But how did fire become part of the human toolkit? The BBC radio show CrowdScience discusses the topic with Leiden archaeologists Andrew Sorensen and Kathy MacDonald.

In the days following Christmas, Christa Tobler gave a series of interviews to Swiss newspapers and Swiss radio about the new Trade and Cooperation Agreement between the EU and the UK and about what it might mean for Switzerland-EU relations and the draft EU-Swiss institutional framework agreement.

Social media are playing a key role in calling for resistance to the corona measures. Online, agreements are made about where and when people will gather to protest. The authorities are not always fully aware of what is happening and cannot just infiltrate, whereas civilians can often easily participate…

What does it mean to be in a Dutch prison? What is true about the prejudices about being in jail? Criminologist Marieke Liem has released a podcast on Dutch national broadcaster NPO Radio 1: Hotel met tralies.

Alumnus Théo Pavlović received the Master's Speckmann award for his thesis: PAN RECORDS - A digital journey through the ethnic music niche that was supervised by Bart Barendregt. This price is awarded to the best fieldwork reports for ethnographic fieldwork. It includes a certificate and a prize of…