On Saturday 7 December, Leiden professor of Observational Astrophysics Ignas Snellen received the Hans Sigrist Prize from the University of Bern. The prize was awarded to him for his groundbreaking research on planets outside our own solar system.

With his clever measuring methods Ignas Snellen – together with his team – was the first to detect carbon monoxide in the atmosphere of exoplanets. For his pioneering work the Leiden astrophysicist has been awarded the Spinoza Prize, the highest academic honour in the Netherlands. The prize of 2.5 million…

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.

Chinese athletes must perform this Olympics. Anything less than a gold is being seen as athletes being unpatriotic by furious nationalists online. Florian Schneider, director of the Leiden Asia Centre, explains the situation on BBC News.

The directorate of Leiden Observatory consists of the Scientific Director, the Director of Education and the Director of Operations.

Are there other planets like the earth, and will there also be life? Astronomers study planets around stars other than the sun, with the aim to find out what kind of gasses their atmospheres are made up with.

Promotor: Prof. dr. I. Snellen, Co-Promotor: Dr. M. Kenworthy

Within our Faculty you may find scientists and students from the highest tier. On this page you can explore the different prizes and grants we have accumulated over the years. Ranging from sports achievements to Spinoza prizes. From ERC grants to royal distinctions. Each and every one an achievement…

Hot rocky exoplanets are planets that orbit so close to their host star that they possess a molten surface.

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Of the 111 Spinoza Prizes that have been awarded since 1995, 28 have gone to researchers from Leiden University.

Promotor: I. A. G. Snellen, Co-promotor: M. A. Kenworthy

Promotor: Prof.dr. I.A.G. Snellen, C.U. Keller

Is there extra-terrestrial life out there? It now looks as though we can sketch out an answer to this enduring question. Leiden Observatory is helping to build new instruments to find the most promising exoplanets.

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.

At Leiden Observatory, researchers investigate the origin of stars and their planetary systems. They detect and characterize planets around other stars, which are called exo-planets. They study how stars and planets form. And they follow molecules from interstellar clouds to nascent planet systems.…

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

Dirk Uittenbogaard, a student on the Delft-Leiden Master’s in Industrial Ecology, has won a gold medal for rowing at the Olympic Games in Tokyo. Uittenbogaard took gold in the men’s quadruple sculls, together with Abe Wiersma, Tone Wieten and Koen Metsemakers.

Two Leiden scientists - Ignas Snellen and Bernhard Hommel - have been awarded an ERC Advanced Grant. The grant will fund their research over the coming five years on exoplanets and free will.

Professor Ignas Snellen has developed an online platform where exoplanet researchers can post videos about their work: exoplanet-talks.org. ‘For young researchers in particular it’s a way to bring their research to people’s attention.’

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

Welcome to the Leiden Science community! Throughout the year, our faculty hosts a range of events designed to bring together students and staff. From interesting lectures to lively gatherings and ceremonial milestones, there’s always something happening for you. Explore the upcoming events and make…

The two-year Astronomy and High-Tech Innovation master’s specialisation places you at the heart of the latest astronomical discoveries, cutting-edge instrumentation, high-precision measurements, and innovative technologies in advanced instrumentation engineering. The programme is supported by researchers…

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

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

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

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

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

The Old Observatory in Leiden has reclaimed its most important telescope. Since the 1960s, the Meridian Circle (also known as a transit telescope) had been housed in the Boerhaave Museum. After more than sixty years, the telescope is finally back in its original location. Now, the public can enjoy it…

Astronomers at Leiden University have detected rare isotopes of carbon and oxygen in our neighbouring stars for the first time, providing a new window to better understand the chemical evolution of the cosmos.The results are published today in the journal Nature Astronomy.

Four scientists will receive the TOP grant for Physical Sciences from the NWO (Netherlands Organisation for Scientific Research). They are astronomer Ignas Snellen, mathematicians Tim van Erven and Charlene Kalle and computer scientist Siegfried Nijssen. The funds will be used to finance temporary research…

Dutch astronomers have measured a superstorm for the first time in the atmosphere of an exoplanet, the well-studied “hot Jupiter” HD209458b. The very high-precision observations of carbon monoxide gas show that it is streaming at enormous speed from the extremely hot day side to the cooler night side…

Astronomers have discovered seven Earth-like planets around a dwarf star in our galaxy. Three of these planets are located in the habitable zone of this star, and may contain liquid water. ‘The next step is to study the atmospheres for signs of life. In Leiden we are experts in that area,‘ says planetary…

Astronomers at Leiden University have discovered the first planets using a new instrument: the planet hunter MASCARA. This instrument, developed at Leiden Observatory, looks specifically for planet transitions around the brightest stars in the sky, which surprisingly enough have so far have hardly been…

Leiden University will confer an honorary doctorate on astrophysicist Sara Seager for her work on exoplanets.

Seven Leiden professors have been elected as members of the Royal Netherlands Academy of Arts and Sciences (KNAW). In total 23 new members will be inaugurated on Monday 13 September.

The new MASCARA-facilty in Chile has achieved first light. This new facility will seek out transiting exoplanets as they pass in front of their bright parent stars and create a catalogue of targets for future exoplanet characterisation observations.

On Monday 9 May Mercury will pass between the Earth and the Sun. This rare event can be followed in the Leiden Observatory. The Observatory's new solar telescope produces a very clear image and offers a unique opportunity to observe Mercury at the highest magnification possible in the Netherlands.