ASTRON en de Universiteit Leiden beginnen samen een nieuwe leerstoel over sterrenkunde en AI. Bijzonder hoogleraar Joeri van Leeuwen gaat deze positie vullen.

Speculation about alien life, a new nitrogen map, AI as a thesis supervisor, groundbreaking telescopes and multi-million-euro investments to combat antimicrobial resistance – the diversity of these topics shows that our readers are just as broadly interested as our researchers. Discover the most-read…

An impressive speech by Dean Jasper Knoester, a lecture by top researcher Mario van der Stelt about brain messengers, and the presentation of the faculty awards. 2025 begins on a hopeful and festive note, with a toast to a year of fruitful collaboration within and beyond the faculty.

A special type of mirror to reflect X-rays has more possible applications than space research. Targeted radiation therapy for cancer, for example. Next to his full-time job, physicist David Girou mapped out the possibilities. He will receive his PhD on 14 June.

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.

It was the Night of Discoveries on Saturday 16 September: a summer encounter between art and science. Leiden researchers from various disciplines inspired the public with their quest to understand our world.

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For her research into migration policy under different political regimes, Katharina Natter has been awarded the Gratama Science Prize for young, talented researchers.

Criminal law can reinforce social inequality. ‘People at the lower end of society are hit harder by criminal law in a range of different ways’, says Professor Marloes van Noorloos. ‘That has to change.’

Just start somewhere: whether it's videos, board games, theatre performances, or festivals. That was one of the key insights Sophie Wintermans gained during the Science Communication Summer School. In her view, the Summer School is a great step for any scientist interested in science communication.

Using the James Webb Space Telescope, an international team of researchers, including Leiden Professor of Molecular Astrophysics Ewine van Dishoeck, has discovered a palette of hydrocarbons in a planet-forming disc around a young, low-mass star. The results confirm that discs around very lightweight…

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…

The Dutch Research Council (NWO) has rewarded four projects in which Leiden researchers are bringing science and society closer together. What are these projects?

Leiden University has an active open science community. Open science means transparency in all phases of research by precisely documenting every step of the way and making this publicly available. ‘It’s time to be open,’ say psychologists Anna van ’t Veer and Zsuzsika Sjoerds. There is increasing awareness…

For the first time, an international group of astronomers have seen the heat glow of two ice giant planets colliding. They could also observe the resultant dust cloud move in front of the parent star several years later. Led by Leiden astronomer Matthew Kenworthy, they monitored the star's brightness…

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.

How do you rebuild a field of science after years of war? In June, a remarkable gathering of Ukrainian and Dutch astronomers took place at Leiden’s Old Observatory, aimed at jointly developing a recovery plan for Ukrainian astronomy.

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…

As a student, you’re expected to write papers and collaborate. But how do you do that if you’ve never been taught? Thanks to the Grassfields grant, the Science Skills team can scale up its Skill’Ed project and finally provide students with structured support in essential skills.

Work has begun on an accommodation complex for international PhD candidates and postdocs at the Leiden Bio Science Park.

After ten years and one day, Leiden Observatory has a new director. As of 1 September, Ignas Snellen will set the course for the astronomical institute. In this interview, you will get to know Ignas. Or at least a little. That is why we gave him five dilemmas and asked the people around him who he really…

Green cities and a well-protected food system: Roy Remme and Oliver Taherzadeh study ways to achieve these. But how can their scientific findings lead to societal change? They share their experiences with science-policy initiatives.

After months of preparation, the moment of truth had arrived: would the skies above Leiden clear for the promised glitzy planet-and-star show? The people of Leiden turned out in their hundreds to go star-hunting on 25 September. They became more aware than ever of the effects of light pollution.

When deciding what to study you undoubtedly read a lot of information about your study programme. Leiden University employs various systems to provide information about programmes and courses and to facilitate communication between lecturers and students.

The nominees for the IRO thesis prize 2021 and for the Prof. Dr. J.Th.J. van den Berg prize 2021. Who wrote the best Political Science bachelor’s theses?

...What does seem clear, though, is that there is a great deal of room for improvement in the process of out-of-home placement. The FSW's social and behavioural scientists give their views.

Astronomers have used data from the European Gaia Space Telescope to discover 55 high-speed stars launched from the young star cluster R136 in the Large Magellanic Cloud, a satellite galaxy of the Milky Way. This increases tenfold the number of known “runaway stars” in this region. The team of astronomers,…

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.

Zes onderzoekers zijn voor twee jaar aangesteld als themaleider voor de onderzoeksthema's van de faculteit Wiskunde en Natuurwetenschappen.

Are you interested in creating a fabulous science pitch? Neurospyschologist Liza Cornet - winner of the National Famelab Science Pitching Competition 2020 shares 3 tips based on personal experience that can help you design your pitch.

A true shower of awards for students from the Faculty of Science during the annual KHMW Young Talent Awards ceremony. On Monday, 25 November, no less than nine first-year students received a prize for the best academic results in their first year. In addition, there were graduation prizes for master’s…

Pim Overgaauw, Director of Operations of the Mathematical Institute at Leiden University, is an avid bird watcher and photographer.

Brain scans, heart attacks and credit scores: many science applications revolve around data. But how do you mine applicable insights from a mountain of data? In a Bachelor Honours Class, students discover how data science can contribute to their discipline.

The Dutch Research Council (NWO) has awarded Vidi grants to Leiden researchers.

Citizens still see great value in science communication and want to be increasingly involved in science. This is evident from research by the National Expertise Centre for Science & Society (NEWS) and researchers from the Science Communication and Society department at Leiden University.

What motivates citizens to participate in a citizen science project on plastic pollution? And does that motivation change over time? Liselotte Rambonnet tried to answer these and other questions with her research on the Clean Rivers (‘Schone Rivieren’) project. Rambonnet is a PhD student at the Institute…

The thesis is a major milestone for master students graduating in Political Science. It demonstrates their ability to conduct research independently and to provide a thorough, objective and sound analysis. That requires instruction, discussion, thinking and hard work. Lots of it. In some cases this…

Tradition has it that at the end of each academic year, the best master’s thesis in Political Science is awarded a prize. For 2021-2022, the jury is considering six nominations. All of great quality, but on different topics. These range from political party bans to questions regarding commitment within…

Towards the graduation ceremonies, you sense an increasing nervousness. Not only because all the tradition and glamour surrounding the event, also because that will be the day that the winner of the Political Science master’s thesis award will be announced. For 2022-2023, the jury is considering seven…