Dit rapport maakt deel uit van het project Receptenboek burgerparticipatie in opdracht van de Rijksdienst voor het Cultureel Erfgoed (RCE) en met steun van het Fonds voor Cultuurparticipatie.

The starting hypothesis of the project is that secrecy is not always inimical to democratic governance as conventional wisdom has it.

NNMT wordt beschouwd als een nieuw potentieel farmacologisch doelwit in de behandeling van een verscheidenheid van kankers, stofwisselingsziekten en andere pathologieën. Het toenemend aantal publicaties waarin de rol van NNMT bij ziekten wordt opgehelderd, heeft op zijn beurt de ontwikkeling van krachtige…

Stars orbit black holes while jumping up and down. This is the prediction of a theoretical model developed by Leiden physicist Satish Kumar Saravanan, based on Einstein’s theory of relativity. He defends his PhD thesis on July 7th.

The Old Observatory houses four historical telescopes. On this page you can learn more about them.

SciSTIP was established on 1 April 2014 as part of the DSI-NRF Centres of Excellence Programme funded by the South Africa’s National Research Foundation (https://www.nrf.ac.za/). SciSTIP is hosted by the Centre for Research on Evaluation, Science and Technology (CREST) at Stellenbosch University and…

The physics of black holes appears to be as far removed from the physics of electrons in metals as it can be.

In this thesis chemical and physical processes in the ice mantles on interstellar dust grains are studied.

NASA’s telescope SOFIA has provided a new glimpse of the chemistry in the inner region surrounding massive young stars where future planets could begin to form. Leiden PhD candidate Andrew Barr writes about it in the Astrophysical Journal. The scientists found massive quantities of water and organic…

Planet formation is a surprisingly homogeneous process that does not take place gradually from inside out, but that occurs everywhere at the same time in a proto-planetary disc, as Dave Lommen has discovered. He will obtain his doctorate this week based on his research into the dust around young stars…

Astronomers led by Leiden astronomer Sebastiaan Haffert have directly imaged two planets that are gravitationally carving out a wide gap within a planet-forming disk surrounding a young star. While over a dozen exoplanets have been directly imaged, this is only the second multi-planet system to be p…

Every year The Young Academy (a sub-group of KNAW) nominates ten talented researchers to join their ranks. This year two of the nominees are from Leiden University: Quentin Bourgeois and Frans Snik.

Promotor: Prof.dr. J. Schaye, Co-promotor: Marcello Cacciato

Is there extra-terrestrial life out there? It now looks as though we can sketch out an answer to this enduring question. Leiden Observatory is helping to build new instruments to find the most promising exoplanets.

Foute taal? Bestaat niet!

De spreidingswet die asielzoekers evenwichtig over gemeenten in Nederland moet verdelen en per 1 juli 2025 gereed moet zijn, staat onder druk. Mark Klaassen, universitair docent migratierecht, spreekt in EenVandaag over de zaak.

I want to understand the overlap between physical health, mental health, and healthy aging and whether/how stress (behaviorally and biologically) may tie these concepts together.

OB associations are loose groups of young, massive stars. They constitute the last stage of the massive starformation process, and the context in which new stars are formed.

The League Against Imperialism: Lives and Afterlives explores the dramatic and engaging story of a global institution that brought together activists across geographical and political borders for the goal of eradicating colonial rule worldwide.

How did Leiden University score in terms of sustainability this year?

For the first time, astronomers have detected the presence of complex organic molecules, the building blocks of life, in a protoplanetary disc surrounding a young star. The discovery reaffirms that the conditions that spawned the Earth and Sun are not unique in the Universe. The results are published…

Detecting planets during their formation stages is crucial for understanding the history and diversity of fully developed planetary systems like our own. However, observing young planets directly is challenging because they are often deeply embedded within their host protoplanetary discs, rich in gas…

Although migration and integration have become important concepts today as a result of globalization, migration movements, integration, and multiculturalism have always been part of the history of Europe. Few people realize how many ethnic groups participated in migration within Europe or into Europe…

In the past 30 years, over 5,000 planets have been discovered outside our solar system. One common exoplanet is the lava world, a hot super-Earth with oceans of liquid lava. Mantas Zilinskas developed models to simulate possible atmospheres of these. Those simulations provide guidance for astronomers…

Three Leiden astronomers have shown that some asteroids that are considered harmless for now, can collide with Earth in the future. They did their research with the help of an artificial neural network. The results have been accepted for publication in the journal Astronomy & Astrophysics.

The European Research Council has awarded an Advanced Grant to Prof. dr. Maarten E.R.G.N. Jansen for the research project

The ALMA Local Expertise Group (Allegro) is located in the Leiden Observatory (Sterrewacht). Professor Ewine van Dishoeck: ‘The Netherlands has played an important role in establishing ALMA. Thanks to this subsidy, we can now reap the scientific benefits.'

Covid-19 is een disruptieve ontwikkeling die hier en nu veel vraagt van zorgprofessionals, bestuurders en managers. Hoewel de crisis nog volop bezig is, is nu al duidelijk dat het Coronavirus een blijvende impact zal hebben op zorginstellingen en fundamentele vragen oproept over hoe we onze zorg optimaal…

Leiden University offers its students a wide range of bachelor's, master's and minors that explore sustainability or climate. Here, you find an overview of those programmes in the academic year 2020-2021.

Recente publicaties in de Leidse handboekenreeks zullen hieronder verschijnen.

On 1 September, the conference of the Kirchheiner Chair ‘Government and citizens: A matter of trust’ took place. In a packed hall in the beautiful Old Observatory of Leiden University, under the inspiring leadership of Willemien den Ouden, a debate was held on the role of the Dutch National Ombudsman,…

LIACS aims at being a diverse and inclusive research institute. To reach this goal, two instances are working on addressing diversity related issues.

Bachelor, Master

Leiden PhD student Xuequan Zhou has designed a new promising molecule that efficiently kills cancer cells, but does not harm healthy tissue. The trick: the drug is only active when irradiated with light. Zhou’s new compound does this extra efficiently by cleverly self-organising into nanoparticles.…

Seagrass is a marine flowering plant with special adaptations to coastal and marine environments, playing a crucial role in providing a wide range of ecosystem services.

How can governments reach their policy goals in the most effective way? Which manner of financing is the most suitable? Does the spirit of our times call for new forms of subsidy? What does the future of subsidy law look like?

Have you had a busy week at work? If so, it’s better to take a walk in a natural environment than to go shopping in the city.

After nearly 70 years, the Leiden Observatory has a new telescope. A crowdfunding action in March brought in the 20,000 euros required to build a solar telescope. On 19 September Rector Magnificus Carel Stolker officiated at the opening.

On Monday 9 May Mercury will pass between the Earth and the Sun. This rare event can be followed in the Leiden Observatory. The Observatory's new solar telescope produces a very clear image and offers a unique opportunity to observe Mercury at the highest magnification possible in the Netherlands.

De voorjaarsvergadering van de Stichting Oudchristelijke Studiën vindt plaats op 7 maart 2020. De ochtendlezing wordt verzorgd door Prof. Gie Vleugels, terwijl Dr. Klazina Staat instaat voor de middaglezing.