While investigating 16 years of images of young stars from a retired astronomical camera, Leiden master's student Sam de Regt discovered that two of those stars were still enveloped in birth clouds. Never before has anyone captured these two stars in so much detail. He publishes his data-cleaning method…

A team led by Leiden University in the Netherlands and the National Radio Astronomy Observatory have, for the first time, robustly detected semi-heavy water ice around a young sunlike star. In this ice, some of the ordinary hydrogen atoms have been replaced by deuterium, a heavier variant of hydroge…

Two teams of astronomers, including one from Leiden University, have discovered oxygen in the most distant known galaxy, JADES-GS-z14-0. This groundbreaking discovery shows that galaxies could form much faster in the early universe than was previously thought.

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Astronomers have discovered an enormous supply of cold molecular gas in a galaxy shortly after the Big Bang. The finding offers a rare glimpse of the raw material from which the first large galaxies were built. Measurements suggest that around 95 per cent of the normal matter in the galaxy studied,…

Leiden University guides PhD candidates step by step from the start to the defence. You will find more information here about admission, the PhD track, and completion, as well as answers to questions such as: what conditions must I meet? What requirements must my dissertation meet? And what is involved…

Research, Didactics, Career development

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Leiden University offers practical support and advice for professional communication. Here you will find all the guidelines and tools you need to get started immediately, as well as answers to questions such as: How do you apply the house style? Where can I find suitable imagery? And who can I turn…

An organisation the size of Leiden University requires careful internal communication.

Leiden University offers researchers extensive facilities and support at every stage of their academic career. Here you will find more information on funding, policy, and publishing, as well as answers to questions such as: How do I arrange a PhD track? Which research grants are available? And what…

Would you like to share your academic news with the world? Since 1 January 2024, Leiden University has been a partner of The Conversation, an international not-for-profit news platform that unlocks academic knowledge for a wide audience.

Arts and leisure, Arts and leisure

Research, Transferable skills

Career development, Communication, Transferable skills

Personal development, Transferable skills

Research, Transferable skills

Research, Communication, Transferable skills

Organisation

How do molecules originate and evolve in space? And how does that ultimately determine the chemical composition of planets and their atmospheres? The Dutch Astrochemistry Network (DANIII) receives 1.6 million euros from NWO to find out. A large group of Leiden astronomers and chemists is contributing:…

The purpose of writing a script is to create a visually engaging storyline for the video. Depending on the extent of the video production, your text can be quite simple or written-out in detail. Filming in a studio or on location with a videomaker usually means you need to translate your story into…

Communication, Research, Transferable skills

Course

As of 6 October 2025, Leiden University has incorporated three key HR processes into a new platform: the Talent and Development Platform.

Can assessment practices become more fair in the age of GenAI? A group of Leiden University students and teachers set out to work on this question during the FAIR-ASSESS Deliberative Assembly. One key takeaway: our views on GenAI remain diverse – and that’s a strength of our university community, according…

Speaking with your manager more often, focusing explicitly on well-being and giving more recognition and rewards for teamwork and team performance: the annual Performance & Development (P&D) interview will have a new format and also a new name. With the acronym GROW (Gesprekken over Resultaat, Ontwikkeling…

How wonderful would it be to use art, technology and science in Ukraine's recovery? Young Ukrainians currently residing in Poland get guidance to develop creative programmes and activities that can later be implemented. Leiden astronomers Pedro Russo and Kateryna Frantseva cooperate in the project.

When a challenge or question presents itself, our first reaction is often: ‘Let’s organise training’. But is that always the best solution? The working day often offers plenty of informal learning and development opportunities

Jeroen van Gessel’s lecturers didn’t always have time for extensive feedback on his written assignments. So, together with tech-savvy friend Menno Hahury, he founded Eduface, a startup to develop an AI teaching assistant. ‘The first users now work three times faster.'

The University believes it is important that you are happy in your work. This is why we gauge your opinion with the personnel monitor. We use the results to make improvements that enhance job satisfaction.

Leiden University wants to attract the best academics. What requirements does it set for new academic staff members? What requirements must you meet for a career in academia? Read more about our career policy for academic staff.

Four promising young researchers from Leiden University have received a Rubicon grant from the Dutch Research Council (NWO). This grant will enable them to gain valuable research experience at top universities abroad.

Research, Transferable skills

Career development, Transferable skills

Looking for an easy way to compile, order or view readers online? Then meet ReaderOnline. The instructions below will help you on your way.

Communication, Research, Transferable skills

Research

We have to do all we can to stop climate change. But: the Earth is more resilient than we thought. That is the surprising conclusion of an international team of ecologists and mathematicians, which included Leiden mathematician Arjen Doelman. The team discovered that ecosystems can still avoid tipping…

What skills do students need to function as academic professionals and engaged citizens?

How to innovate education? In this series, the Honours Academy highlights examples from their educational testing ground that aim to inspire. Today: the liberating effect of pass/fail and ‘unessays’ at Honours College Law.

Tachtig academische papers, 270 deelnemers en vier rondetafelgesprekken over het aanpakken van mondiale problemen. De tweede conferentie van het interdisciplinaire onderzoeksprogramma Global Transformations and Governance Challenges werd groots opgezet. Wat vonden de deelnemers ervan? Bekijk het in…

The announcement was made shortly before the summer break: from 1 September the annual Performance & Development (P&D) interview will have a new format and also a new name. The P&D interview will be changing to GROW (Gesprekken over Resultaat, Ontwikkeling en Welzijn): Conversations on Performance,…

Galaxies in the early universe contain more dust and hidden star formation than previously thought. That's what Ivana van Leeuwen concludes in her PhD research, where she combines data from various telescopes to create a more complete picture.

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Didactics

Didactics

Biologist Marcel Schaaf is one of four science faculty members who achieved the Senior Teaching Qualification in Leiden last year. How was that and what drives him? ‘Students receive way too often feedback that they cannot put into practice.’