The Algebra, Geometry and Number Theory specialisation gives you profound knowledge of pure mathematics. The focus is on both fundamental mathematics and on applications in other sciences, society and industry. During your master’s you will be part of one of the multidisciplinary research teams at the…

By effectively integrating word-class scientific research and excellent education, you will become a professional astronomer with an internationally recognized degree.

The Mathematics and Education master specialisation gives you the opportunity to combine Mathematics research with an excellent education in becoming a Mathematics teacher.

We are committed to provide you a meaningful, rigorous and quality graduate experiences in a personalized environment with a cutting edge research infrastructure and internationally renowned supervisors.

The Physics and SCS master specialisation gives you the opportunity to combine Physics research with different aspects of science communication.

The BPS and Education master specialisation gives you the opportunity to combine fundamental chemistry research with an excellent education in becoming a Chemistry teacher.

The Computer Science and SCS master specialisation gives you the opportunity to combine fundamental research in computer science with different aspects of science communication.

The Computer Science and Education master specialisation gives you the opportunity to combine computer science research with an excellent education in becoming a teacher.

By effectively integrating word-class scientific research and excellent education, you will become a professional astronomer with an internationally recognized degree.

The Physics and Quantum Matter and Optics specialisation is one of the two programmes Leiden offers in experimental physics. The programme can be tailored to individual needs and interests.

World-class research is integral part of the master’s education. You obtain a Physics degree from an institute with an international reputation. Research in this programme is fundamental and curiosity-driven.

The Biological- and Soft-Matter Physics Master specialisation is one of the two programmes Leiden offers in experimental Physics. The programme can to a high degree be tailored to individual needs and interests.

We are committed to provide you a meaningful, rigorous and quality graduate experiences in a personalized environment with a cutting edge research infrastructure and internationally renowned supervisors.

By integrating world-class scientific research and education, you will become a professional physicist with an internationally recognized degree.

We are committed to provide you with meaningful, rigorous and quality graduate experiences in a personalized environment with a cutting edge research infrastructure and internationally renowned supervisors.

The MSc programme Physics offers 5 research-oriented specialisations where you can focus on Theoretical Physics, Quantum Matter and Optics, Biological and Soft Matter, or Cosmology. You can also combine Physics with education, management or science communication.

By effectively integrating world-class scientific research and excellent education, you will become a professional astronomer with an internationally recognized degree.

The master's specialisation Astronomy and Cosmology at Leiden University covers all aspects of modern astrophysics, including observation, interpretation, simulation and theory. This programme is essentially based on combined research in astronomy and physics and is therefore open for students with…

The ICT in the Public Sector master’s (last intake in February 2025) aims to provide a deeper understanding of the issues, challenges and opportunities of ICT-management and -alignment in a governmental environment.

The ICT in Business and the Public Sector master’s programme (last intake in February 2025) aims to provide a deeper understanding of the issues, challenges and opportunities of this subject. The programme focuses on management and alignment of ICT in a business and socio-technical context.

The ICT in Business master’s programme (last intake in February 2025) aims to provide a deeper understanding of the issues, challenges and opportunities of this subject. The programme focuses on management and alignment of ICT in a business context.

After many years of preparations, CERN has approved a groundbreaking new experiment: the Search for Hidden Particles (SHiP). Physicist Alexey Boyarsky was involved from the start. ‘We know there is physics that’s missing and we aim to find it.’

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

NWO has assigned Physics Vrije Programma grants to five collaborations of physicists. Leiden University is involved in three of them.

The Leiden Observatory was very pleased to welcome eight bachelor’s students from Beijing Normal University at 8 July for the BNU Astronomy Summer School. In two weeks’ time, the Summer School students followed an interactive programme in computational astrophysics. ‘It’s surprising how much you can…

On 26 October, Leiden University held its first online signing ceremony, signing an agreement with China’s top university Tsinghua to establish a joint PhD programme to co-foster young researchers in the fields of astronomy and astrophysics.

A team of scientists, including Leiden Astronomer Alice Booth, has discovered silicon monosulfide molecules in the dust disk around a young star. Such molecules indicate planet formation. The team made the discovery using the ALMA telescopes. This method provides an alternative when direct observation…

Leiden professor of molecular astrophysics and astrochemistry Ewine van Dishoeck was presented with the Niels Bohr International Gold Medal on Friday 7 October. The medal, instigated by the Danish Society of Engineers IDA, was awarded by Queen Margrethe of Denmark at a ceremony at the Carlsberg Academy…

Ewine van Dishoeck was broadly covered in national and international media with her prestigious Kavli prize for astrophysics. She won 1 million dollars voor her groundbreaking work on star and planet formation and on extraterrestrial life.

Here you can find an overview of the Erasmus+ projects undertaken by Leiden University since 2015.

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.

An international team of astronomers, with researchers at Leiden Observatory playing a leading role, has mapped the fuel for galaxy formation in the iconic Hubble Ultra Deep Field. The results of the research have been accepted for publication in The Astrophysical Journal.

All supermassive black holes in the centres of galaxies appear to have periods when they swallow matter from their close surroundings. But that is about as far as the similarities go. That's the conclusion reached by British and Dutch astronomers from their research with ultra-sensitive radio telescopes…

The representation of women in science is improving, also at the Faculty of Science. On 8 March – International Women's Day – we highlight the work of female scientists from our faculty.

Leiden astronomer Anthony Brown had the honour to give the prestigious Spitzer Lectures at Princeton University. In five lectures spread over the beginning of May, he gave an insight into the Gaia Mission. ‘One of the intellectual highlights of the year.’

A team of laboratory astrophysicists from Leiden University managed to make glycerol under conditions comparable to those in dark interstellar clouds. They allowed carbon monoxide ice to react with hydrogen atoms at minus 250 degrees Celsius. The researchers publish their findings in the Astrophysical…

With great sadness we share the news that Prof. Harold Linnartz passed away suddenly and unexpectedly on Sunday 31 December 2023. We are all in shock, and our thoughts are with his wife and children, other family, and friends. Harold was at the heart of our institute, as a researcher, as a supervisor,…

Leiden astronomers published two articles on more sustainable astronomy in a special section of the journal Nature Astronomy. Among other things, they calculate that their online conference EAS 2020 consumed three thousand times less carbon dioxide than the face-to-face edition a year earlier. They…

The Institute for Advanced Study has appointed astronomer and chemist Ewine Fleur van Dishoeck to its Board of Trustees, effective 5 May, 2018.

The French Astronomical Society SAF (Société Astronomique de France) has awarded its international astronomy prize, the Jules Janssen Prize, to Leiden professor and IAU president Ewine van Dishoeck for her scientific achievements.

An overview of awards and prizes granted to our staff and students in 2022, as well as special appointments at Leiden University and other institutions.

What is the Fine Mechanical Department?

This is an Erasmus+ International Credit Mobility project of Leiden University’s Faculty of Science with two Nigerian universities, the Center for Basic Space Science and University of Nigeria.

Cameron Mackie has been awarded both the Dissertation prize of the Laboratory Astrophysics division of the American Astronomical Society and the Dissertation prize of the Astrochemistry subdivision of the American Chemical Society for his thesis entitled

As of 16 August Ignas Snellen is the new Scientific Director of the astronomical institute of the Faculty of Science. He will succeed Huub Rottgering, who led the institute since 2012. Snellen has been appointed for a period of four years.

Theoretical physicists Kevin Grosvenor and Sam Young have won Marie Curie grants for research projects at LION/Lorentz Institute.

An overview of awards and prizes granted to our staff and students in 2018, as well as special appointments and royal distinctions.

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…

Leiden PhD researcher Karin Öberg is one of the 17 winners of the NASA Hubble Fellowship. When she has obtained her PhD this autumn she will move to the United States for three years to conduct post-doctoral research into the role of ice in star formation.