A team of Leiden astronomers has managed to calculate the first 100 million years of the history of the Oort cloud in its entirety. Until now, only parts of the history had been studied separately. The cloud, with roughly 100 billion comet-like objects, forms an enormous shell at the edge of our solar…

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…

Starting 2 July 2022, a new exhibition will be opened to the public at the Old Observatory: More-than-Planet. This exhibit asks the question: how do we imagine our planet?

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

On 5 September 2016 Space Awareness launched their first Massive Open Online Course (MOOC) on teaching with space and astronomy in the classroom.

Amino acids are the building blocks for life on earth. They may originate in space and reach the Earth via comets and meteorites. Daniël Paardekooper examined part of this hypothesis. PhD defence on 5 July.

Vaccines are an extraordinary category of biopharmaceuticals. They are usually prophylactic and come in many types, from whole bacteria to peptides and nucleic acids. They are very cost effective and almost every human on the planet is vaccinated. The latter mandates that vaccines have to be extremely…

Ending the United Kingdom’s (UK) forty-seven year European Union (EU) membership has fundamentally transformed its relationship with the EU. After years of tumultuous negotiations, international law now once again governs the UK’s relationship with the EU. This has resulted in a sophisticated body of…

Leiden University College offers Bachelor of Arts and Bachelor of Science degrees within a Liberal Arts & Sciences programme that focuses on four Global Challenges: Peace & Justice, Sustainability, Prosperity, and Diversity. The programme’s environment is characterized by small-scale, interactive sessions…

It is not man’s ingenuity, but rather materials that are the source of innovation and progress. This is what archaeologist Maikel Kuijpers concludes based on his research into craftsmanship and material processing in the Early Bronze Age.

Large telescopes can look so deep into the Universe that they can also look back billions of years in time. From 2018, the successor of the Hubble Space Telescope, the James Webb Space Telescope, will be able to see the period just after the Big Bang, when the first stars and galaxies formed. Astronomers…

To maximise your personal development, we ensure tutorials are small-scale and staff members extremely accessible. In year one, you’ll have an average of 12 contact hours, half of which comprise lectures (in English) and the remainder tutorials (optionally Dutch or English).

The international bachelor's programme in Cultural Anthropology and Development Sociology covers three years, allowing you to establish a firm foundation and specialise in topics that you find interesting.

LUC's Liberal Arts and Sciences programme offers you the opportunity to specialise in one of six Majors while keeping the Global Challenges at the centre of your studies.

Although the world has made tremendous progress in health, education, sanitation and hygiene, global public health challenges still exist. Disparities in health exist between and within nations as evidenced by inequalities in disease burden, mortality, nutrition and environmental well-being. How does…

In honour of Krijn Rietveld (1956 - 2018), Leiden University Fund and dsm-firmenich have created the Krijn Rietveld Memorial Awards to reward researchers who make extraordinary efforts to bring about an impact beyond scientific understanding in the field of life sciences, health science, biotech, or…

Tanja Masson-Zwaan, an assistant professor at the Institute of Air and Space Law, spoke on Friday 14 April about space mining on BBC Radio.

Since 1974, World Environment Day has been celebrated every year on 5 June, engaging governments, businesses and citizens in an effort to address pressing environmental issues.

This Saturday will be the first Kaiser Spring Lecture of this year! - A series of public lectures on Astronomy in the Old Observatory.

‘I already gave a talk about planets when I was five.’ With the theme of the 3 October celebrations being ‘Jong geleerd is oud gedaan’ (meaning something like, ‘You’re never too young to learn’), this year’s 3 October University was especially for children. Many parents came with their offspring to…

From molecular ping-pong to cassava in the Amazon, and from extraterrestrial life to special antibodies. Twenty-five researchers from Leiden University have been awarded a Veni grant from the NWO. A grant of up to 250,000 euros will give them the opportunity to further elaborate their own ideas over…

De Universiteit Leiden kan van start met de bouw van 300 studentenwoningen en 500 overige woningen in het Leiden Bio Science Park.

Nowadays data-driven working is very important within Rijkswaterstaat. A Variety of employees is involved in analyzing the data collected on daily basis by Rijkswaterstaat. The goal is to ensure that we construct an infrastructure in the Netherlands which will be safe, accessible and liveable in the…

Xander Tielens, Professor of Physics and Chemistry of the Interstellar Space, has been awarded an ERC Advanced Grant to study polycyclic aromatic hydrocarbons (PAHs) in space. The combination of astronomical observations, computer models and lab research makes the research highly interdisciplinary.

From the effects of hormone fluctuations in women via the interior structure of giant planets to the prehistory of the languages: six Leiden researchers have been awarded a Consolidator Grant by the European Research Council.

Astronomers from the Leiden Observatory and from the University of Rochester (in the US) have discovered that the planetary ring system that covered the very young sun-like star J1407 is actually of enormous proportions. In fact, it’s much larger and heavier than the ring system surrounding Saturn.…

Leiden astronomer Xander Tielens has been awarded a Spinoza prize, the highest scientific prize in the Netherlands. Tielens is Professor in the Physics and Chemistry of Interstellar Space. He studies large and complex, often organic, molecules found in interstellar space. The Spinoza prize carries a…

The world abounds with different footprints that calculate human impact on the environment. Environmental specialist Kai Fang is the first person to have developed a family of footprints that allow better measurement of environmental damage and the depletion of natural sources. PhD defence on 24 Nov…

What does it mean for a citizen to be ‘literate’ in astronomy? Astronomers who participate in outreach to the general public experience various degrees of astronomical knowledge among people. But so far, there had not been a systematic evaluation and definition of what astronomical literacy actually…

An international team of scientists including Leiden's Joe Callingham has discovered nineteen red dwarf stars that unexpectedly emit radio waves. The outbursts possibly originate from interaction with exoplanets. The results of the research appear in two scientific publications.

Astronomers at ASTRON and Leiden University have used the LOFAR radio telescope to discover a 'brown dwarf' – a faint object more massive than Jupiter, but significantly less massive than the Sun. The discovery of the object dubbed Elegast, opens up a new path that uses radio telescopes to discover…

The year 2023 saw the earthquake in Turkey and Syria, the Wagner Group rebellion and wildfires and floods as all the weather records were smashed. Our most-read stories were about the climate crisis and the elections: here’s the list.

This page features an overview of relevant lectures, publications and conference papers.

Jason Rudall, Assistant Professor of Public International Law at the Grotius Centre for International Legal Studies, has published a monograph entitled 'Responsibility for Environmental Damage'.

Dr. Brackney is a modern European intellectual and cultural historian with a Ph.D. from Yale University. Before coming to Leiden, she held postdoctoral teaching posts in the History & Literature program at Harvard University and the Pozen Center for Human Rights at the University of Chicago.

Friday 5 February is Warm Sweater Day, a national initiative that encourages us to be aware of the simple measures we can take to save energy. The quickest win – certainly now we are all studying and working at home – is to turn the thermostat down a couple of degree. Take a selfie and share it on Instagram…

After two years Covid-19, we are happy that the Media Technology staff and students will together again visit the Ars Electronica Festival in Linz (Austria). The five-day trip offers a shared source of inspiration and a basis for discussion to students and lecturers.

In 2023, many of our students and staff won great prizes and secured important research grants.

Issues such as climate change, the depletion of natural resources or social inequality are too complex to be addressed from a single scientific discipline or by a single country. Leiden University has the expertise to bring the resolution of these enormous problems a small step closer.

Study all aspects of human life in the past and take on a broad, historic perspective.

Conferences, Workshops and Lectures showcasing research and tools in Digital Humanities.

The winter season is almost here and so is the end of our exhibition More-than-Planet. From 1 November, you can only visit us with exclusive guided tours. During this tour, you will visit one of our historical telescopes and we will take you through the More-than-Planet exhibition.

Vanuatu, an island nation in the South Pacific, announced last month that it will seek an opinion from the International Court of Justice to clarify the legal obligations of all countries to prevent and redress the adverse effects of climate change.

This summer, the Universe is closer than ever. With the online astronomy summer programme Space in Your Living Room!, the Leiden Observatory brings astronauts and Leiden astronomers to the homes of children all across Europe.

Ahead of the new Multi-Annual Financial Framework (MFF), the entire European academic world is calling upon Brussels to double the budget for education, research and innovation.

14 March 2018 a Citizens’ Dialogue about plastic-use in Europe with First-Vice President Frans Timmermans took place in Utrecht. It was one in a series of dialogues organized by the European Commission held throughout Europe. LAPP-student Emily den Boer joined the evening.

Her specialist field is molecular astrophysics, and she is the most quoted scholar in her field. In this, the year of astronomy, she is the ideal person to give the Dies lecture at the university with the world's oldest astronomy institute; it goes without saying that the lecture will be on the newest…

Fourteen promising researchers from Leiden University have been given the opportunity to realise their research plans for the coming years thanks to a Veni grant from the NWO. This year, these subsidies have been granted to studies of the influence of noise on the great tit, the conditions necessary…

This year, NWO has awarded a Veni subsidy to 143 young researchers who have recently obtained their PhD. 17 of these researchers are at Leiden University and one works at the LUMC. The successful applicants will each receive 250,000 euro to develop their ideas and carry out research over a period of…

It is the largest database for space ice yet: The Leiden Ice Database for Astrochemistry: LIDA. Created by astrophysicists at the Leiden Observatory, LIDA includes not only hundreds of measurement data, but also software to examine astronomical observations and prepare new measurements with the James…