Bas Heijmans is professor of Biomedical Data Sciences and focuses on Population Epigenomics. His drive is to understand how the regulation of our genome is tuned by both environmental signals and genetic make-up, and the impact this process has on our health throughout life. In his role as scientific…

Sebastiaan Rietjens holds the special chair of 'Intelligence in War & Conflict' established and funded by the Netherlands Defence Academy. He also is a full professor of Intelligence & Security at the Netherlands Defence Academy. He has done extensive fieldwork in military exercises and operations (Afghanistan…

As part of the research project

At the moment, many staff members are working intensively on the implementation of BAS InSite, our new administrative system. Much is already up and running – salary payments, invoice processing and the new staff hiring procedure – but some elements still need to be finalised and not everything is working…

Professor of Laboratory Animal Science. Ancillary positions: • Project Leader, EU-project: ‘Promoting alternatives to animal testing through accessible and harmonised education & training’ (09.200200.A092004/2021/864077/SUB/ENV.B.2) • Member of the editorial board of Animals (MDPI open access…

At the top right of the faculty BAS-InSite page, you will find an instrument in Excel that allows you to find a cost center based on an old SAP number. You will also find project numbers there. Please note: this tool is updated regularly, so click on the link on the site the next time you use it. If…

Michiel Hogerheijde is an Associate Professor at Leiden University. His research focuses on the origin of planetary systems such as our own Solar System and the systems that are now commonly found around other stars.

Huub Rottgering's main research interest is in observational studies of active galaxies, clusters and large scale structures in the distant universe with the aim of understanding their origin and evolution.

Ewine van Dishoeck researches molecules in space. She has gained world fame with her pioneering work. Her current passion is the hunt for water and the water cycle in space. This will provide answers to questions such as: where does the water in our rivers come from? And: could there be life on other…

Jeffrey Fynn-Paul is a university lecturer at the Institute for History.

A team of international researchers led by Tomas Stolker in the Netherlands has imaged a young gas giant exoplanet near a 12-million-year-old star. The planet is orbiting a star at which planet formation has finished, while the same-aged companion star still has a planet-forming disk. The researchers…

Janna Marie Bas-Hoogendam is an assistant professor at the unit Developmental and Educational Psychology of the Institute of Psychology at Leiden University. She is also affiliated with the department of Psychiatry (Leiden University Medical Center) and part of the Knowledge Center for Anxiety & Stress…

On January 16, 2022, our respected and beloved colleague Prof. dr. Bas Edixhoven passed away after a short period of serious illness.

The Belgian elections are over. Now it is up to the formateur to form a cabinet, but that is difficult. Fauke Deceuninck, program leader of Politics and Governance at the Center for Professional Learning, explains to Speechmakers why that is.

Leiden researchers, Professor Remko Offringa and co-applicants Salma Balazadeh and Frederic Lens received an NWO-XL grant (2.5 million euros). Together with researchers in Wageningen and Groningen, they will study the genetic and environmental drivers of woodiness. From plant to molecule, the groups…

Randal Sheppard is University Lecturer at the Institute for History.

The sustainable production of hydrogen could potentially be made more efficient by adding a cleverly chosen salt to the process. Researchers at the Leiden Institute of Chemistry (LIC), in collaboration with physicists at the University of Twente, have discovered that the type of salt present in the…

It’s time to announce a major development within the teaching and education we provide at our faculty: the launch of the Atelier pilot! Atelier will be a new teaching format within the bachelor’s programme in Law. The pilot will be conducted in the 2024-2025 academic year during the third block of the…

Since 5 January, Leiden University has been live with BAS InSite, the new administrative system. Follow these three tips to get familiar with the system: Explore BAS InSite and get to know the new system Do you have questions about BAS InSite? Follow the “Who–What–Where” route BAS InSite on your mobile…

Jeroen Duindam is Professor of Early Modern History at the Leiden University Institute for History.

A large number of invoices are still pending review and approval. Invoices that have not been approved will not be paid. Suppliers may send reminders, charge higher fees, and discontinue their services. Please pay attention to the timely review and approval of invoices. You can find the overview in…

Sarah de Lange is Professor of Dutch Politics at the Institute for Political Science.

How do you progress from an immense gas cloud somewhere in the universe to a star with planets? Research by Astronomy PhD student Martijn van Gelder sheds more light on the earliest phases of this process. He will receive his doctorate on November 24th.

How do galaxies form? That is what astronomer Mariska Kriek will be researching in the coming years. She received an NWO Vici grant of 1.5 million euros to study galaxies in the early universe. ‘This research uses new and unprecedented observations from the James Webb Space Telescope (JWST). These allow…

An international team of scientists, including Xander Tielens of Leiden Observatory, has used space telescope Hubble and the ALMA observatory to show that UV radiation from massive stars can prevent planets from forming. The researchers publish their findings on 1 March in the journal Science.

From January 2026, there will no longer be SAP Self Service and some parts of the Service Portal, because Leiden University will be transitioning to Basic Administration System, BAS InSite. To make sure that all your information has been entered correctly and completely before the transition, you will…