Low-mass main-sequence stars like our Sun are continuous sources of outflowing hot magnetised plasma. In the case of the Sun, this is known as the solar wind, whereas for other stars they are called stellar winds.

This thesis examines the link between simple molecules and the underlying structure and chemistry within protoplanetary disks - the birthplaces of planets.

Paul Behrens and his team have won the Frontiers Planet Prize of half a million euros for their research into the effects of switching to a plant-based diet.

My work focuses on a class of astronomical objects called protoplanetary disks.

PhD student Thierry Rohmer received the Ernst Award 2009 of the Gesellschaft Deutscher Chemiker (GDCh) for his publication in the Proceedings of the National Academy of Science of the USA on the structure-function relation of the photoreceptor phytochrome. The prize was presented at the Annual Discussion…

Promotores: Prof.dr. J. Schaye & Prof.dr. C. Steidel (California Institute of Technology)

The name ‘Jambi flora’ refers to fossil plants found as part of a rock formation from the Early Permian (296 million years old), located in the Jambi Province of Sumatra, Indonesia.

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

The Career Service Humanities offers assistance while you’re a student and for a year after you graduate! We can help you with:

Professors Jos Raaijmakers (NIOO) and Gilles Van Wezel (IBL) received an STW Perspectief- grant of €3 million from the Dutch Technology Foundation and several supporting companies.

Mathematical and computational analysis of the dynamics of polar transport of the plant hormone auxin.

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.'

Promotor: Arjen Doelman, Co-promotor: Vivi Rottschäfer

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The Basics and Applications to Plant Sciences will be held physical. See below for more information.

A jar, filled with water, that functions as an aquarium for fishes while plants or flowers grow on top. Urban Crops, a young start-up company, creates small eco-systems in jars by using aquaponic systems. The 'Ecojar' is a modern decoration in living-rooms and office spaces, but also purifies the air…

Promotor: H.J.M. de Groot, Co-Promotor: A. Alia

Promotor: M. Franx, Co-Promotor: I.F. Labbé

The Writing Lab helps students to become better academic writers. Our tutors offer support during any stage of the writing process, whether you’ve only just started and need help with planning, incorporating sources and/or making an outline, or whether you’re already writing a text and want to improve…

The formation and evolution of galaxies is fundamentally driven by the formation of new stars out of cold gas.

To study how planetary systems come into existence we study much younger systems still in formation.

Understanding how galaxies form, interact, and evolve comes largely from comparing theory predictions with observational data. Numerical simulations of galaxies provide the most accurate approach to testing the theory, as they follow the non-linear evolution of gas and dark matter in great detail and…

Promotores: Prof.dr. M. Franx, Prof.dr. M. Kriek (Univ. of California at Berkeley)

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…

If you're considering starting the master’s in February, please take into account that the programme may be adapted if fewer than 12 students enroll. In that case, you'll begin with an intensive crash course designed to provide essential foundational knowledge. Read below what the adapted program will…

Simulations of galaxy formation provide much more information about galaxies than a telescope. Simulations have been improving significantly in recent years. Astronomer Evgenii Chaikin made such a significant contribution to this field that he graduated with honours on February 27th.

Many hot, rocky planets outside of our own solar system started out as large, gaseous Neptunes. This is what astronomers at Leiden University contend in a recent online publication.

Stars like the sun are born in large molecular clouds existing from gas and dust. During the formation process, the chemical composition of the material can be altered drastically by the changing physical conditions.

Evolutionary and ecological interactions affect species on genetic and phenotypic levels. This theme aims to understand these processes at multiple levels: from molecules to genomes to populations and to communities. Our research focuses on evolutionary responses to anthropogenic change, the role of…

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EL CID has started! This is the week when new students have the chance to get to know the city and student life. Some of the mentors and first-years introduce themselves.

Balsaminaceae is a diverse plant family characterized by a huge floral morphological diversity.

Living systems scale from unicellular microbes to complex multispecies communities that constantly change over time. Within the theme Development & Disease, we enhance our fundamental understanding of development and homeostasis of living cells and systems. We analyze the normal situation and how stresses…

We investigate the buildup of galaxies from various vantage points. The first two chapters focus on the stellar content of galaxies, especially the distribution of stellar masses at birth and potential variations therein in various galactic environments.

Catharanthus roseus (Madagascar periwinkle) produces valuable monoterpenoid indole alkaloids (MIAs) such as vincristine and vinblastine, crucial for cancer treatment.

The project examines the political conflict in the Red River Valley of Louisiana between the majority-black Republican Party and the overwhelmingly white Democratic Party by studying the composition and actions of each party.

The earth has more than 7 billion inhabitants, all of whom leave behind traces of pollution. However, not all forms of pollution have the same harmful effect. Leiden scientists help determine where we should put our priorities.

Why the dunes of The Hague matter for the water from your tap

Together with a large international team of scientists, researchers Peter van Bodegom and Nadia Soudzilovskaia of the Leiden Institute of Environmental Sciences (CML) have created maps of variability in plant trait distribution across the globe. The new maps have been published in Proceedings of the…

In the 16th and 17th centuries, many Northern-Netherlandish artists drew outdoors to train their hands and eyes, and to record landscapes and nature. In her inaugural lecture on 21 March 2022, Yvonne Bleyerveld, Professor by Special Appointment of Art on Paper and Parchment, draws our attention to a…

On 21 and 22 March 2019 the workshop 'Criptic Identities. Historicizing the identity formation of persons with disabilities across the globe' takes place at the Leiden Institute for History.

The NWO just announced the results of the Vrije Competitie proposals. Paul Smith, professor at the French department is, as a member of LUCAS, one of three scholars within the Faculty of Humanities at Leiden University who has been awarded this grant.