Staring into the clouds hoping for a glimpse of the sun, cheering in encouragement, video recordings: there was no shortage of things to do at the Leiden Observatory. More than 600 visitors witnessed the last, almost complete solar eclipse of the decade..

Adrian Hamers is researching the way in which celestial bodies orbit each other, now and in the future. This often turns out to be more erratic than you might think. He will defend his PhD dissertation on 21 June.

Universe Awareness is one of fifteen projects chosen by WISE for providing compelling and innovative solutions to today’s most pressing challenges in education.

An international team of astronomers that includes researchers from Leiden has discovered the most distant galaxy yet. The galaxy, called EGS8p7, is 13.23 billion light years away from Earth and already existed when the universe was only 550 million years old.

Professor David Simchi-Levi of the MIT Sloan School of Management delivered a guest lecture to SBB students enrolled in the Technology and Operations Management course led by Xishu Li, Assistant Professor at Science Based Business. Simchi-Levi’s lecture focused on new approaches he developed at MIT…

Astronomer and science communicator Pedro Russo is awarded the K.J Cath Prize and € 2,500 for his outreach efforts that bring science to the general public. ‘There are so many bright scientists, and so few people communicating about science.’

Chemist Alexander Kros and astronomer Joop Schaye are two of the four Leiden researchers who have been awarded a Vici as part of NWO's Innovation Research Incentives scheme. They each have 1.5 million euros to set up a research group and employ PhD candidates.

The connection between programming and reading seems non-existing. Yet in the new reading book ‘De Programmeerbende’ they go together very well. On 26 February author Inge Strijker and co-inventor and computer scientist Felienne Hermans launched the book at the Leiden Institute of Advanced Computer…

Two black holes, in close orbit around each other. Have they slowly drifted together, or did they emerge from two orbiting stars? Together with to colleagues form Amsterdam, Leiden astronomer Simon Portegies Zwart calculated that the second scenario is rather likely.

More than 700 visitors got to know the Science Faculty during the Leiden Science Family Day. People of all ages could enjoy fascinating experiments, tours, interesting lectures, spectacular nitrogen shows and various workshops. It was an informative day with many (future) scientists, amazement and,…

From lectures by Robbert Dijkgraaf to a telescope on the ocean floor: during his double bachelor’s in Physics and Astronomy, Jelle Oonk discovered that the path to big cosmic answers sometimes runs through the smallest, hardest-to-catch particles—neutrinos.

Theoretical physicist and cosmologist Alexey Boiarskyi has been appointed full professor per 1 October.

Adrian Hamer, who obtained his PhD in the group of Simon Portegies Zwart on 21 June 2016, receives a prestigious PhD thesis award prize of the International Astronomical Union. Hamers is one of the most talented, young, theoretical astrophysicists, according to the jury.

Dutch astronomer Jorryt Matthee will receive the European MERAC Prize for Best Doctoral Thesis in observational astrophysics. Matthee received his doctorate at Leiden University in 2018 and is now doing research at ETH Zürich.

Leiden University has started a collaboration with the Nicolaus Copernicus University in Poland. The project includes the exchange of students and staff, joint research, and the organisation of seminars and conferences. Besides Leiden, the universities of Copenhagen, Newcastle and Innsbruck are also…

Universe Awareness (UNAWE) started a crowdfunding campaign together with Design & Data GmbH, with a central role for the plush 'astronaut' Rosetta. This stuffed toy is used for interactive classes, in order to teach pupils across the world about astronomy and space sciences.

As of 1 September, Pim Overgaauw is appointed as Institute Manager of the Mathematical Institute. The job is not new to him, as he has been ad interim institute manager since March 2022. For now, Overgaauw will be working for the MI three days a week, but it is expected that this can be extended to…

An international team led by Leiden astronomers has discovered diverse ices in the darkest, coldest regions of a molecular cloud. To do so, they used the James Webb Space Telescope. This discovery allows astronomers to examine the simple icy molecules that will be incorporated into future exoplanets,…

OP Grants NWO are awarded to 16 scientists in astronomy, computer science and mathematics, or a combination of these disciplines (multidisciplinary) by NOW Exact Sciences. The scientists received a total amount of 6 million euros.

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

Ben Wielstra and his team have received a ENW-M-1 grant. This grant of 354.000 euros is awarded by NWO, and will enable the researchers of the Institute of Biology Leiden and Naturalis to continue their evolutionary newt research.

The Faculty of Science of Leiden University and the Technical University of Denmark (DTU) signed an exchange agreement on Tuesday. This Erasmus+ student mobility agreement allows all students of the Faculty of Science and DTU students to follow courses at both universities from September 2017 on.

Leiden pharmacy and pharmacology has risen to 17th place in the QS World University Rankings by Subject. In 2016 it was in 21st place in this annual ranking of leading universities in 46 disciplines.

Biology is one of the four top educational programs at Leiden University according to the national “Guide to Universities” (Keuzegids Universiteiten).

The program for the Kaiser Spring Lectures 2018 has been published! Visit the Old Observatory in March for four amazing lectures about the Space Age.

Twenty-two of the 150 newly elected members of the Dutch House of Representatives studied at Leiden University or did their PhD research here. But who are they and which degrees are most popular?

The program for the Kaiser Spring Lectures 2018 has been published! Visit the Old Observatory in March for four amazing lectures about the Space Age.

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 application procedure is broken down into three parts. PLEASE NOTE: The specialisation High-Tech Innovation starts in September 2026.

The application procedure is broken down into three parts.

It might seem a bit early to be considering this, but what will you do after completing your programme? At Leiden University we ensure that all our students are well prepared for the job market, and we’ll do our utmost to help you get your career off to a flying start.

On March 13, Dr. Erik Deul passed away at the age of 67. He leaves behind his wife Wilma, children Caroline and Wouter, and grandchildren Joris, Stach, Viggo, Archie and and a granddaughter expected later this year. Erik served as head of ICT at Leiden Observatory for 35 years, and later also at the…

The application procedure is broken down into three parts.

The application procedure is broken down into three parts.

The application procedure is broken down into three parts.

The application procedure is broken down into three parts.

The application procedure is broken down into three parts.

The application procedure is broken down into three parts.

The application procedure is broken down into three parts.

Livia, aged 7, was in class four. She loved to chat and was good at reading aloud. At least, at home. At school she never read aloud and she hadn't spoken a single word. What was going on? Selective mutism was the subject of the inaugural lecture by Maretha de Jonge, Professor by Special Appointment…

It's easy to forget in these turbulent times, but on March 9th the film 'Humans of Humanities' premiered in cinema Trianon in Leiden. 160 guests saw Leiden scientists, teachers, students and alumni talk on the big screen about the value of their work as a humanities scholar. The film was followed by…

Just a stone’s throw from Binnenhof, the heart of Dutch politics, Spui Campus will open its doors in early 2026. Join us for a sneak preview.

Up above the world so high a giant star twinkles. Could an 83-year-old astronomer unravel the mystery of this megastar? ‘At times I thought: that’s it! I give up! It’s beyond me.’

When galaxies collide, do the black holes at their centre form a supersized black hole? This is what we think happens, but it's not as simple as that, according to Simon Portegies Zwart. Zwart, computer scientist and astronomer, has been awarded a VICI grant to research this phenomenon.

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.

Researchers using NASA’s James Webb Space Telescope may have detected atmospheric gases surrounding 55 Cancri e, a hot rocky exoplanet 41 light-years from Earth. This is the best evidence to date for the existence of any rocky planet atmosphere outside our solar system.

‘Academics have descended from their ivory tower, but there’s still too little action or financing.’ Leiden professor of Science Communication Ionica Smeets saw all her wishes come true on 28 January, with the presentation of the Letter to Parliament sent by Minister Van Engelshoven of the Ministry…

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…

Professor Ewine van Dishoeck, together with an international team of colleagues, has written an overview of everything we know about water in interstellar clouds thanks to the Herschel space observatory. The article, published in the journal Astronomy & Astrophysics, summarizes existing knowledge and…