211 search results for “protoplanetary dies” in the Student website
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Xinyu DiFaculty of Science
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Fred di BonAdministration and Central Services
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Victoria Di CésareFaculty of Social and Behavioural Sciences
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Filippo di TillioFaculty of Science
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Jacopo Di VenturaFaculty of Science
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Protoplanetary discs are much smaller than previously thought
Many protoplanetary discs in which new planets are formed are much smaller than thought. Using the Atacama Large Millimeter/submillimeter Array (ALMA) scientists of the Leiden Observatory looked at 73 protoplanetary discs in the Lupus region.
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Martín Hernán Di MarcoFaculty of Governance and Global Affairs
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Matthew di Giuseppe
Faculty of Social and Behavioural Sciences
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Lukasz TychoniecFaculty of Science
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Dies Natalis all about innovating and connecting
‘We could share our knowledge more with others and apply it more widely,’ said Annetje Ottow, President of the Executive Board, while presenting the new Strategic Plan on the University’s 447th Dies Natalis. The new Strategic Plan therefore focuses on innovating and connecting, among disciplines and…
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Princess Beatrix to attend 450th Dies Natalis
Her Royal Highness Princess Beatrix of the Netherlands will attend the Dies Natalis ceremony at Leiden's Pieterskerk on Friday 7 February to celebrate our 450th anniversary.
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Leiden University celebrates curiosity at 449th Dies Natalis
How has evolution shaped our curiosity? And how does that curiosity ensure that we now have the technological ability to discover whether we are alone in the universe? This was all covered during the celebration of Leiden University’s 449th Dies Natalis.
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the Executive Board Annetje Ottow launches new strategic plan at the Dies Natalis
‘It truly is a plan by and for us all,’ said Annetje Ottow, President of the Executive Board, at the Dies Natalis celebration on 8 February. Leiden Law School was also actively involved developing in the strategic plan.
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Value of science the focus of 448th Dies Natalis
The importance of science communication and cross-boundary collaboration, and the ‘mantra’ of diminishing social cohesion in society: these all came up at Leiden University’s 448th Dies Natalis. A panel discussion including Leiden’s mayor Lenferink, music and two honorary doctorates completed the special…
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Two planets-in-formation discovered around young star WISPIT 2
In the disk surrounding the young star WISPIT 2, not one but two planets are taking shape. Leiden PhD candidate Richelle van Capelleveen played a key role in this discovery, providing a rare glimpse into the early stages of planetary system formation.
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Leiden University celebrates Dies Natalis: ‘Ahead of the times for 450 years’
An extra-long cortège, three honorary doctorates, a quiz about 450 years of university history, a Dies Natalis rap and a call to defend academic freedom: these all featured in Leiden University’s 450th Dies Natalis celebration and the official start of its jubilee year.
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Snow, a mini-cortège and a new rector: a special Dies Natalis
No procession of professors, just a handful of people in the church and snowdrifts outside Leiden’s Pieterskerk: 8 February 2021 was no ordinary Dies Natalis. Carel Stolker transferred the rectorate to Hester Bijl, and Annetje Ottow became the new President of the Executive Board. With an honorary doctorate…
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Dies Natalis
University ceremony
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Dies Natalis
University ceremony
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First ring-forming embedded planet discovered around a young sun-like star
Astronomers led by Leiden PhD candidate Richelle van Capelleveen have, for the first time, discovered an exoplanet that has carved a bright gap in the protoplanetary disc around its star. This rare observation provides new insights into how young planets shape their surroundings.
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Surprising molecule helps detect protoplanets
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…
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Royal honour for former Rector Magnificus Carel Stolker
Carel Stolker, former Rector Magnificus and President of the Executive Board of Leiden University, has been made an Officer in the Order of Orange-Nassau for his services to the city and University. Mayor Henri Lenferink awarded the royal honour to Stolker at the University’s Dies Natalis on 8 February…
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Honorary doctorate for Canadian-American astrophysicist Sara Seager
Leiden University will confer an honorary doctorate on astrophysicist Sara Seager for her work on exoplanets.
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What was there first? Water or planets?
Could water be present in planet-forming disks before the formation of rocky planets? The James Webb Space Telescope may have found evidence for that. Webb has for the first time observed water in the inner disc around young star where at greater distance, giant planets have already formed. The research…
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all’italiano odierno: cinque secoli di lingua e stile Simposio per il cinquecentenario delle Prose della volgar lingua di Pietro Bembo (1525–2025)
Conference, Symposium
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Student cleans up archival data and uncovers two stellar cocoons
While investigating 16 years of images of young stars from a retired astronomical camera, Leiden master's student Sam de Regt discovered that two of those stars were still enveloped in birth clouds. Never before has anyone captured these two stars in so much detail. He publishes his data-cleaning method…
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Book ‘De Glazen Toren’: ‘The balance isn't quite right anymore’
Writing a book on the recent history of Leiden University in corona times. For educational and policy historian Pieter Slaman (34), this has meant working in the attic of his parents’ house while they looked after his daughter, along with numerous online conversations and very few, if any, visits to…
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Academic calendar
The academic year officially commences on 1 September and ends on 31 August. On national holidays and compulsory closure dates, the university is closed and no lectures take place.
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Meet the professor: ‘Can my sister be prosecuted for stealing my eraser?’
On the university’s birthday, professors teach a class of 10 and 11-year-olds during Meet the Professor. The professors were bombarded with questions.
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UV radiation from massive stars prevents formation of Jupiter-like planet
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.
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Honorary doctorate for Graça Machel: fund for female students from South Africa
On the occasion of the conferral of an honorary doctorate to children’s rights activist Graça Machel, a fund has been established that will enable two female students from South Africa to come and study in Leiden.
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A real professor in the classroom
It’s starting to become a real Dies Natalis tradition: on 8 February professors from Leiden University teach a class at primary schools in the region. This introduces children to academia and teaches them more about conducting research. ‘Had you expected me to be a woman?’
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‘Universities are changing, but they remain essential to society’
From academic freedom to security and medical breakthroughs: during Leiden University’s 451st Dies Natalis, the speakers reflected on the role of universities in a world of social and geopolitical tensions.
- Herta Mohr lecture
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Tracking the origin and evolution of molecules in space
How do molecules originate and evolve in space? And how does that ultimately determine the chemical composition of planets and their atmospheres? The Dutch Astrochemistry Network (DANIII) receives 1.6 million euros from NWO to find out. A large group of Leiden astronomers and chemists is contributing:…
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Eloquence of the Ineffable — The aftermath of the 2018 opera La Tragedia di Claudio M
Arts and culture
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For the first time, astronomers witness the dawn of a new solar system
International researchers have, for the first time, pinpointed the moment when planets began to form around a star beyond the Sun. Using the ALMA telescope, in which the European Southern Observatory (ESO) is a partner, and the James Webb Space Telescope, they have observed the creation of the first…
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Alessia AspideFaculty of Social and Behavioural Sciences
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Caspar SchmeitsFaculty of Science
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A real professor in the classroom: ‘Did you sweat in the Sweat Room?’
It may be the best tradition of them all: on the university’s birthday, its professors go to primary schools to teach a special lesson. This year, 75 professors visited 44 local schools. ‘How does stress get into your body?’
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Herta Mohr Lecture 2026: Identity and Connectivity at the Oryx District
Lecture, Herta Mohr-lezing
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Alyssa Akkerman
Faculty of Social and Behavioural Sciences
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Kathleen Brown
Faculty of Governance and Global Affairs
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Pouria MirelmiFaculty of Social and Behavioural Sciences
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Winner Africa Thesis Award 2025: Yonwaba Matshobotiyana
The jury of the Africa Thesis Award is delighted to announce that the 2025 prize has been awarded to Yonwaba Matshobotiyana of the University of the Free State, South Africa, with a thesis on Black women's poetry in South Africa.
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Innovating and connecting
447th Dies Natalis
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Latin America’s fight against femicide
Across Latin America, stories of violence against women reveal how deeply gender, power en inequality are intertwined. Researcher Martín Hernán Di Marco tells how storytelling, activism and research together challenge the global cycle of violence against women and girls.
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Jasper's Day
Jasper Knoester is the dean of the Faculty of Science. How is he doing? What kinds of things is he doing and what does his day look like? In each newsletter Jasper gives a peek into his life as dean.
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Bernet ElzingaFaculty of Social and Behavioural Sciences
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Thomas HankemeierFaculty of Science