796 search results for “jaap where since telescope” in the Public website
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4.9 milion euros for unraveling the mysteries of black holes
The Dutch Black Holes Consortium receives 4.9 million euros from NWO for unravelling the mysteries of black holes and other mysteries of the universe. The Astronomy and Society group at Leiden Observatory is affiliated to use the leading research to introduce people of all ages and background, and children…
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Inmates get a chance to peek at the night sky
If you walk along the Hooglandse Kerkgracht in the coming months, you will see a metal box completely out of tune with rest of the landscape. It seems to have come from 'elsewhere'. The box is the results of a collaboration between the Old Observatory and incarcerated minors.
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Enormous supercluster of galaxies discovered
An international team of astronomers, including Leiden's Maciej Bilicki, has discovered an enormous supercluster of galaxies. The supercluster had previously been overlooked because it was obscured by our own Milky Way. The researchers are publishing their findings in the Monthly Notices of the Royal…
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Professor Jos Schaeken: 'I had no idea where Leiden was, but I did know I wanted to study there.'
In the Pioneers of Leiden University series we talk to past and present students who were the first in their families to go to university. In this third instalment we talk to Jos Schaeken (1962) dean of the Honours Academy and Professor of Slavic and Baltic languages and Cultural History: 'I had to…
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Webb data suggest potential atmosphere around rocky exoplanet
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.
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Awards and Grants 2018
An overview of awards and prizes granted to our staff and students in 2018, as well as special appointments and royal distinctions.
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Awards and Grants 2023
On this page you will find an overview of awards and prizes granted to our staff and students in 2023, as well as special appointments at Leiden University and other institutions.
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ESA presents first crystal-clear Euclid photos of the cosmos
The first full-colour images of the cosmos from ESA's space telescope Euclid were presented today. Never before has a telescope been able to take such crystal-clear astronomical images of such a large part of the sky and so far into the deep universe. The five images illustrate Euclid's full potential;…
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Medical Delta Professor Eline Slagboom: ‘The delta region is where everything comes together’
Professor Eline Slagboom has been studying multiple generations of families for over 20 years. She collects data on why some people age healthily and others decline early.
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New Podcast Asks Guests to Reimagine Education
The Centre for Innovation has launched a new podcast series called What if Education… In each episode, the host Monika Theron invites students, teachers and experts to think differently about education.
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New professor fosters multidisciplinary approach to arthrosis
Arthrosis needs a multidisciplinary approach, says Professor Jaap Harlaar. He brings experts from different university medical centres together to unravel the secrets of this condition and thus improve its treatment. This new Medical Delta professor was appointed as Professor of Clinical Biomechanics…
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FameLab: all about blood vessels in 180 seconds
PhD candidates in medicine, Wouter Jan Geelhoed and Nan van Geloven, are the winners of the Leiden preliminary round of FameLab. They are through to the final on 22 April.
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Research programme War, Peace and Justice
The research group War, Peace and Justice brings together scholars, researchers as well as current and former practitioners to explore issues related to the drivers, nature and (new) dynamics of war and conflict, comprehensive approaches to the promotion of sustainable peace, and the role of justice…
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Unsafe products in e-commerce
European product safety law is one of the focal points of internal market legislation.
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Awards and Grants 2017
An overview of awards and prizes granted to our staff and students in 2017, as well as special appointments and royal distinctions.
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Philosophy: Global and Comparative Perspectives (BA)
This Philosophy: Global and Comparative Perspectives bachelor's programme is unique. It offers comparative perspectives from around the world that will enable you to be part of the next generation of thinkers, someone studying and shaping philosophy for a globalised 21st century.
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Open Science
On this page you find all the ways through which the Institute of Psychology aims to foster Open Science.
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European Union Studies (MA)
The Master’s in European Union Studies at Leiden University offers students an opportunity to study the EU from multiple disciplinary perspectives.
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Black Hole Images as Artifacts of Human Choice | Rijksmuseum Boerhaave Exhibition
Delve into the depths of black hole imaging as anthropologist Rodrigo Ochigame unveils the human decisions shaping its portrayal. Explore four alternative color choices at the 'Towards the Black Hole' exhibit, now showing at Rijksmuseum Boerhaave, Leiden.
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Volcanic ‘activity’ in black holes blows monumental bubbles of hundreds of thousands of light-years
An international team of researchers observed the full extent of the evolution of hot gas produced by an active black hole for the first time. As it evolves, the hot gas encompasses a much larger area than previously thought and even impacts objects residing at great distances. Their study is published…
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Many planetary systems prematurely evaporate into thin air
When stars are born, large clouds of gas and dust form that are known as circumstellar discs. Research by PhD candidate Francisca Concha-Ramírez shows that strong radiation from neighbouring stars soon evaporates the dust in these discs, which can prevent planet formation at an early stage. PhD defence…
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Leiden Classics: The Leiden Observatory, the world’s oldest university observatory
Whether finding signals of dark matter or discovering hydrogen in the vicinity of exoplanets, Leiden astronomers are world players in their field, and they are part of a long tradition: Leiden was the first university in the world to have its own observatory.
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Surprise: No methane on the night side of exoplanet WASP-43b
The night side of exoplanet WASP-43b, to the surprise of astronomers, does not appear to contain methane. It is likely that extreme winds do not allow enough time for methane to form in detectable amounts. This is the conclusion of an international team of scientists, with Leiden and Amsterdam contributions,…
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Roel Becker and Jelle But new PhD candidates at Department of Constitutional and Administrative Law
Roel Becker and Jelle But recently joined the Department of Constitutional and Administrative Law as PhD candidates.
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ERC Advanced Grant for Physicist Alexey Boyarsky
Leiden physicist Alexey Boyarsky, together with his colleagues from Lausanne and Copenhagen, has been awarded an ERC Advanced Grant to research an extension of the standard model of particle physics. The leading house of the project is the Technical University of Lausanne. 580.000 euro goes directly…
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Academic freedom, protests and a safe campus: where are we and how are we going to move forward?
Leiden University has had a turbulent week. There have been protests inside and outside our buildings that have evoked reactions, and students and staff have felt unsafe. We want with this message to look back at the past week and look forward to the future. What happened and how do we now want to move…
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Looted art returned to Sri Lanka: ‘It was a job tracing what came from where'
A cannon, a sabre, guns: these Sri Lankan objects had been in the Rijksmuseum for centuries. In early December, they were returned to Sri Lanka. Associate Professor of Colonial History Alicia Schrikker led the research that formed the basis for the restitution and published a volume on the findings…
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Royal honour for astronomer Tim de Zeeuw
Leiden astronomer Tim de Zeeuw has been appointed Knight in the Order of the Dutch Lion. He received the distinction on 14 May to mark his departure as Director General of the ESO European Astronomy organisation. The celebration took place during the 2018 Dutch Astronomers Conference in Groningen.
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Giant planet at large distance from sun-like star puzzles astronomers
A team of astronomers led by Dutch scientists have directly imaged a giant planet orbiting at a large distance around a sun-like star. Why this planet is so massive, and how it got to be there, is still a mystery. The researchers will publish their findings in the journal Astronomy & Astrophysics.
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Medical Delta AI for Computational Life Sciences
The fact that scientists are increasingly better able to access molecular cell and tissue data also brings with it a new challenge: how can scientists find the information they need for research among the vast amount of data available?
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Celestial worlds and comet hysteria in Van Dishoeck exhibition
A moon rock from the Apollo 17 mission, antique globes and the cosmos according to Wassily Kandinsky. Ewine van Dishoeck, Professor of Molecular Astrophysics, has put together an impressive exhibition at Rijksmuseum Boerhaave.
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What do complex molecules tell us about star formation?
How do you progress from an immense gas cloud somewhere in the universe to a star with planets? Research by Astronomy PhD student Martijn van Gelder sheds more light on the earliest phases of this process. He will receive his doctorate on November 24th.
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Astronomers see birth cluster of galaxies in early universe
An international team of astronomers has discovered a large reservoir of hot gas in the cluster-in-formation around the Spiderweb Galaxy. Based partly on that hot gas, the astronomers predict that the cluster-in-formation will grow into one of the largest objects in the universe. A step closer to discovering…
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The hunt for an earth-like exoplanet
Astronomer Frans Snik searches for extraterrestrial life. He doesn’t so much look at stars as at the ‘exoplanets’ alongside them.
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ERC Consolidator grant for Alessandra Silvestri: putting gravity to the test on cosmological scales
Does gravity work the same when you look at the largest scales in our universe? That’s what Leiden physicist Alessandra Silvestri will study with a 2 million euro ERC Consolidator grant. ‘We assume that it does, but we don’t actually know.’
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Astronomers see two planets vacuuming around young star
Astronomers led by Leiden astronomer Sebastiaan Haffert have directly imaged two planets that are gravitationally carving out a wide gap within a planet-forming disk surrounding a young star. While over a dozen exoplanets have been directly imaged, this is only the second multi-planet system to be p…
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Astronomical airplane trails do not fade but lighten up
An unexpected phenomenon in a merger of a cluster of galaxies. An international team of astronomers led by Francesco de Gasperin has witnessed a gas tail of a galaxy, that slowly extinguished, but then lightened up again
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Alessandra Silvestri wins Vidi for understanding the universe
Alessandra Silvestri, a cosmologist at the Leiden Institute of Physics (LION), has been awarded an NWO Vidi grant for understanding the expanding universe. A growing number of theories explain why the expansion of the universe is accelerating, while more and more relevant observational data is pouring…
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Radio astronomers bypass disturbing Earth's atmosphere with new calibration technique
An international team of researchers led by astronomers from Leiden University (the Netherlands) has produced the first sharp radio maps of the universe at low frequencies. Thanks to a new calibration technique, they bypassed the disturbances of the Earth's ionosphere. They used the new method to study…
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First photo of black hole at the heart of our Galaxy
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.
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Dust cloud from two colliding ice planets dims light of parent star
For the first time, an international group of astronomers have seen the heat glow of two ice giant planets colliding. They could also observe the resultant dust cloud move in front of the parent star several years later. Led by Leiden astronomer Matthew Kenworthy, they monitored the star's brightness…
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A much sharper picture of the universe with new algorithms and supercomputers
With new algorithms and supercomputers, an incredibly detailed radio map of the universe was created. Now astronomers can look at radio data of galaxies with much more precision. This was published in Nature Astronomy by Leiden PhD student Frits Sweijen and colleagues.
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In memoriam: Maolin Zhang
We are grief-stricken that our PhD student Maolin Zhang passed away during the early morning of January 17th 2019. He died during a terrible fire that took place at his house in Hillegom.
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72 galaxies never deteted before
Using the MUSE instrument on ESO’s Very Large Telescope in Chile, an international team of scientists, including many Leiden astronomers, have conducted the deepest spectroscopic survey ever. They focused on the Hubble Ultra Deep Field, measuring distances and properties of 1600 very faint galaxies…
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Neutrino linked to black hole that devours star
For only the second time ever, astronomers have linked a neutrino to an object outside our Milky Way. These observations were made using telescopes both on Earth and in space. The researchers, including Leiden astronomer Sjoert van Velzen, were able to trace the neutrino to a black hole that is devouring…
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Working with datasets that are larger than the entire university
Radio telescope LOFAR maps the sky. It produces incredibly detailed images of the universe - and vast amounts of data. Huub Röttgering, director of the Leiden Observatory, talks about the challenges of working with those enormous datasets.
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Seeing Stars: Jupiter steals the show in cloudy night skies
After months of preparation, the moment of truth had arrived: would the skies above Leiden clear for the promised glitzy planet-and-star show? The people of Leiden turned out in their hundreds to go star-hunting on 25 September. They became more aware than ever of the effects of light pollution.
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Black holes are sometimes gigantic volcanoes. Martijn Oei earned his PhD on the subject, with honours
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…
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From research in space to director on earth
After ten years and one day, Leiden Observatory has a new director. As of 1 September, Ignas Snellen will set the course for the astronomical institute. In this interview, you will get to know Ignas. Or at least a little. That is why we gave him five dilemmas and asked the people around him who he really…
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Upcoming PhD public defence, exhibitions, concerts, record/film/artwork launches and lectures
Public Defence by Jaap Brouwer and activities of prof. Marcel Cobussen PhD, Dick de Graaf, Nizar Rohana, Brigitte Kovacs, Lilo Nein, Danne Ojeda, Hans Kalliwoda, Frank Blokland, and Thalia Hoffman