On top of the Gorlaeus Building’s bike parking sits a hidden green surprise: Leiden’s largest rooftop garden. Since this academic year, the garden has been open to all students and staff.

Leiden University's International Honours College, Leiden University College The Hague (LUC) experienced empty halls and empty classrooms this past year on the residential campus on the Anna van Buerenplein in The Hague due to the global pandemic. Dr Paul Hudson designed a Covid-proof course that enabled…

Bachelor, Master

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,…

As early as 2030, batteries in electric vehicles could fully meet the need for short-term electricity storage around the world. By connecting them to the power grid they can provide their stored energy, improving energy security and enabling renewable technologies in cleaning the grid.

Safe use of IT

The theme of the Heritage Open Days Leiden on 10 and 11 September is sustainability. At four University locations guides will talk about the history of the buildings and how they have been renovated. And there is a first: tours in sign language.

The many thousands of small celestial bodies beyond Neptune’s orbit may have ended up there due to a star that passed close to the solar system billions of years ago. This is shown by Leiden simulation expert Simon Portegies Zwart, along with his German and Dutch colleagues. ‘We are answering several…

Master's students Adam El Amraoui, Eesha Sheel, Frieda Chen and Lawrence Kurowski are organising a graduate conference. On March 26, students will gather to ponder definitions of belonging both within Asia and among Asian diasporic communities.

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.

The discovery of a planet far too large for its sun defies models about the formation of solar systems and planets. In a paper in Science, researchers, including Yamila Miguel of Leiden Observatory, report the discovery of a planet more than 13 times heavier than Earth orbiting the ultracool dwarf star…

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…

During International Student Week, from 14 to 18 November, we would like to put our international students into the spotlight. Ricardo Alexandre de Jesus Vaz (21) from Portugal is in his first year at FGGA and a student in the Master International Relations and Diplomacy (MIRD).

Alumnus Robert van Asten has been an MP for D66 since 2025. He studied Tax Law at Leiden University from 1997 to 2005. After a career in tax law, he moved into local politics and later national politics.

Gijs Zebregts had just graduated from International Studies when he was stricken with acute leukaemia. A stem cell donor brought relief. Now he is going to cycle from Florence to Rotterdam to raise money and awareness for the donor bank.

3 October University has become something of a tradition: a bit of science among the Leidens Ontzet celebrations. During the new and improved edition, the WetenschapsWarenMarkt (Science Market), visitors spoke to researchers about the nitrogen problem, making organs and the city’s connections with A…

From predicting Alzheimer’s to the growth of organisms: psychologist Marjolein Fokkema’s algorithms can be used in many disciplines. They also provide inspiration for her songs, theatre shows and life lessons. What drives this rocking researcher?

The promising early results of an international study have shown that insulin-producing cells grown from stem cells can cure the disease. The new Cure One LUMC research centre aims to accelerate this breakthrough.

More than a course. That was the aim of the Leiden Tutoring programme. Through weekly tutoring lessons, students did not just earn five EC. They helped Dutch primary-school children from neighbourhoods with a low socioeconomic status.

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…

With a combination of incidental sunshine, torrential rain, and wind chills, weather conditions were not ideal for a hiking excursion. Even so, last Saturday, honours students braved a trek across an estate and a golf club in Wassenaar to learn about the relationship between gardens and nature. From…

Good food. This is an important topic in the interview with Chair Ruben Venema and Activities Director Martine Feteris from the Leiden Vegan Student Association, which was launched in May. An interview rounded off with an extra helping of recipes.

Tjerk Oosterkamp of the Leiden Institute of Physics managed to do the first-ever measurement of gravity on a tiny particle - just 0.43 milligrams - where the quantum regime starts. He explains in Physics World why this is so challenging.

Leiden University will confer an honorary doctorate on astrophysicist Sara Seager for her work on exoplanets.

Lecture, Ancient History Research Seminar

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…

The orbits of 27 stars orbiting closely around the black hole at the center of our Milky Way are very chaotic. As a result, researchers cannot predict with confidence where they will be in about 462 years. ‘That is astonishingly short,’ says astronomer Simon Portegies Zwart who collaborated on the r…

Discover budding creators, artists and researchers at the Night of Discoveries art and knowledge festival. And many researchers from Leiden University are taking part.

PhD candidate Karen van den Akker has written a children’s book to get young girls excited about technology. The picture book ‘Met mama naar Mars’ tells the story of Luna, who wants to travel to Mars.

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.

How can we supply the growing world population with sustainable energy? At Laurens College in Rotterdam, Prof. Marc Koper speaks with the students about the crucial role of chemistry in the energy transition. Guest classes like this are a good way for school students to learn about the academic world,…

The James Webb Space Telescope continues to surprise us with stunning pictures, but of what exactly? Astronomer Nienke van der Marel shows with three images how massive stars lead short but explosive lives.

A star does not just appear in the sky overnight. Its creation takes tens of thousands of years. Twenty years ago, astronomers took a picture of a star in its birth phase. The James Webb Space Telescope (JWST) could now capture that same star in much greater detail. This does not only provide beautiful…

An international team of astronomers including Leiden professor Ewine van Dishoeck has observed the benzene molecule (C6H6) in a planet-forming disk around a young star for the first time. The observations tell us more about the forming of planets in this disc, like our own Earth. The scientists publish…

Jasper Knoester is the dean of the Faculty of Science. How is he doing, what exactly does he do and what does his day look like? In each newsletter, Jasper gives an insight into his life.

With his clever measuring methods Ignas Snellen – together with his team – was the first to detect carbon monoxide in the atmosphere of exoplanets. For his pioneering work the Leiden astrophysicist has been awarded the Spinoza Prize, the highest academic honour in the Netherlands. The prize of 2.5 million…

During the summer, staff and students of the Faculty of Archaeology travel to all parts of the world, initiating or joining fieldwork projects. Read some of our students' stories here!

How is Young Star Renske Donkers doing now? Early this year she was the second person ever to win the Young Star Award for the best bachelor student. After her bachelor Molecular Science & Technology, Renske is now busy with her master Chemical Process Engineering in Delft. ‘This award was a great boost…

‘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…

Four female computer scientists share a common goal: to showcase the significant contributions of women in computer science and inspire their students. Together, they are organising this year’s Alice & Eve event, a one-day symposium dedicated to celebrating women in computer science. The event, scheduled…

On Thursday 19 June, the sun-drenched garden of the Huizinga Building was the setting for the Education Market. Over snacks and drinks, colleagues inspired each other with educational innovations.