Course, summer school

internship, research project, fieldwork, summer school, conference, excursion, field trip, thesis

internship, research project, fieldwork, summer school, conference, excursion, field trip, thesis

internship, research project, fieldwork, summer school, conference, excursion, field trip, thesis

internship, research project, fieldwork, summer school, conference, excursion, field trip, thesis

internship, research project, fieldwork, summer school, conference, excursion, field trip, thesis

internship, research project, fieldwork, summer school, conference, excursion, field trip, thesis

internship, research project, fieldwork, summer school, conference, excursion, field trip, thesis

internship, research project, fieldwork, summer school, conference, excursion, field trip, thesis

internship, research project, fieldwork, summer school, conference, excursion, field trip, thesis

internship, research project, fieldwork, summer school, conference, excursion, field trip, thesis

internship, research project, fieldwork, summer school, conference, excursion, field trip, thesis

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At Home in Leiden is dedicated to fostering a sense of belonging and providing a supportive home away from home for non-EU first-year international students. Our project emphasizes the importance of small yet impactful aspects of life that can significantly influence mental health and academic succe…

Course, Summer School

Course, Summer School

Summer School

Astronomers have measured the mass of a dormant, supermassive black hole in the early universe for the first time. Thanks to a combination of the James Webb Space Telescope and a natural cosmic magnifying glass, researchers were able to weigh the black hole directly based on its gravity.

internship, research project, fieldwork, summer school, conference, excursion, field trip, thesis

An international team of astronomers led by Matus Rybak (Leiden University) has proven, thanks to accidental double zoom, that millimetre radiation is generated close to the core of a supermassive black hole. Their findings have been accepted for publication in the journal Astronomy & Astrophysics.

Finally we know for sure that there is a black hole at the centre of our own galaxy. Today, astronomers unveiled the first ever photo of Sagittarius A*, a super-massive object at the centre of the Milky Way. This picture could only be taken thanks to the cooperation of telescopes worldwide.

This research project investigates diversifying and democratizing heritage through practices of “home-making”. Research may include studies of allotment gardens, displays of immigration histories, and forms of collaborative heritage, mostly in the Netherlands, with possible comparisons elsewhere in…

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,…

How are supermassive black holes born? That is the question astronomer Elena Maria Rossi is trying to answer. But how do you investigate something you cannot see?

An international team of astronomers led by Dutch scientist Martijn Oei has discovered the largest pair of jets from a black hole ever seen. The 'jumbojets' extend a combined length of 140 Milky Ways. The Leiden Observatory played a prominent role in this research. The publication will feature on the…

‘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…

Studying abroad and going on an exchange is a great way to broaden your horizons and explore new places, cultures, and fields of study. In addition to a full-semester exchange, there are many other possibilities such as a summer school or an internship. For example, Bart Geldermans, Public Administration…

A European team of astronomers has discovered the largest stellar black hole in the Milky Way. It is more than thirty times as massive as our sun and is located in the constellation of Aquila, about two thousand light-years from Earth. The astronomers stumbled upon the black hole by chance while preparing…

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…

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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.

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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 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.

Not everything that comes close to a black hole is swallowed by it. Black holes can also hurl material away, and that chance turns out to be considerably bigger than previously thought. Martijn Oei's accidental discovery and his subsequent research on it earned him a cum laude promotion on 12 Decemb…

To understand the universe as a whole, simulations on a cosmic scale are required. An international team of astrophysicists, led by Leiden University, is today making one of the largest cosmological datasets ever available for free. It comprises more than 2.5 petabytes of simulation data.

An international team of scientists, including Xander Tielens of Leiden Observatory, has used space telescope Hubble and the ALMA observatory to show that UV radiation from massive stars can prevent planets from forming. The researchers publish their findings on 1 March in the journal Science.

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…

From 16 to 20 June 2025, the Institute of Security and Global Affairs of Leiden University hosted the annual Summer School The European Union, the United Nations and Global Governance in The Hague. The programme brought together recent graduates, PhD students, and young professionals from a variety…

Last Friday, June 3rd, students, professionals and academics put their knowledge to the test during the Leiden Leadership Pubquiz/Leiden Leadership Summer Café. The pubquiz, hosted by Eduard Schmidt, touched upon public leadership in the news, posed statements about remarkable leadership research, and…

For many students, a summer school abroad is a fun and useful way to spend the summer. This year, because of the travel restrictions, many summer schools were held online. There was no less interest from students though. What is it like to study in a different country, but digitally? Or to travel abroad…

Bachelor's and master's students and PhD candidates came together from 10 to 13 July at Campus The Hague for the EUniWell Summer School ‘COVID-19: Impact on European health & well-being’. The participants attended lectures and workshops on the impact of the pandemic on public health. They also discussed…

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The POPcorner, Career Service and Community Engagement Service are happy to support you during your study career. Every month you will find an overview of our activities here. This time: the summer edition!

In the 60s and 70s, Black Power groups were also active in the Kingdom of the Netherlands. This is what PhD candidate Debby Esmeé de Vlugt has discovered.