99 search results for “SATELLITE ORBITS” in the Staff website
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The archaeology of face masks: ‘Face masks layers will be a huge help for future archaeologists’
From one year to the next, face masks have started to appear in the environment. As the masks are discarded, they end up in the top soil, in sediment layers, and in refuse heaps. In a couple of generations archaeologists will study the layer that has already been labeled the Face Mask Horizon. Current…
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Public lecture "Air quality from space: indicator of human activity"
Lecture
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Introducing: Shiru Lim
Shiru Lim has been working at the Institute of History as an assistant professor since August 1, 2023. Below she introduces herself.
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James Webb Space Telescope sees sand clouds on 'cotton candy planet' WASP-107b
A team of European astronomers has found a silicate-based weather system on a cloudy gas planet around the star WASP-107. It is the first time astronomers have found silicate clouds and rain. They also conclude that temperatures deeper in the atmosphere are rising rapidly. 'The presence of clouds has…
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A lunar land grab?
Missions to the moon have become popular again. In just one week, a lunar mission from Russia failed while India landed a spacecraft in a historic first. Companies, too, want to go to the moon. But can anyone just go to the moon? Tanja Masson-Zwaan explains the rules of international space law on Dutch…
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What tiny isotopes reveal about planets outside our solar system
Planets existing in other solar systems contain invaluable information about the origin of planets and life. PhD candidate Yapeng Zhang has studied their atmospheres by looking at their smallest parts: isotopes. With her research she hopes to discover what makes our own solar system unique.
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Your old smartphone is indispensable for the energy transition
By 2050, we can obtain 40 per cent of our demand for scarce earth metals from old smartphones, batteries, and wind turbines. This is crucial because otherwise, we may not have enough to accomplish the energy transition. An international team of researchers from China, the UK, and Leiden's Tomer Fishman…
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‘Everyone will benefit from rules in space’
From a billionaires’ space race to the launch of tens of thousands of minisatellites: space is becoming busier than ever. This means more than enough work for Tanja Masson-Swaan, an assistant professor at the Institute of Air and Space Law at Leiden University. Because who makes the rules and makes…
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Four Leiden consortia awarded large NWO grants
No less than four Leiden research teams have been awarded a grant by NWO. On 27 July NWO honoured 21 applications in the Open Competition ENW-XL. NWO awards the grants to consortia in the exact and natural sciences who are doing unconnected fundamental research that is 'driven by curiosity'.
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A piece of rubber can't count. Right?
Martin van Hecke and Lennard Kwakernaak (Leiden university and AMOLF) develop a mechanical metamterial that can count to ten in their research.
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The Military Perspective: Space Power
Lecture
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Isotopes and the characterization of extrasolar planets
PhD defence
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Mining the kinematics of discs to hunt for planets in formation
PhD defence
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Astronomy through a pinhole
You can make some astounding images using just a box with a hole. Inspired by the celebration of Leiden as the European City of Science, Professor Matthew Kenworthy left several pinhole cameras across the Observatory over the course of 2021. This is how the simplest devices may uncover the greatest…
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Leiden PhD student discovers thin atmosphere on exoplanet TRAPPIST-1 c with JWST
A group of astronomers led by Leiden PhD student Sebastian Zieba has discovered using the James Webb Space Telescope (JWST) that the rocky exoplanet TRAPPIST-1 c has a thin atmosphere. Although the planet is nearly identical to Venus in size and temperature, and was expected to have a thick atmosphere,…
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Gaia sees strange stars in most detailed Milky Way survey to date
Today, ESA’s Gaia mission releases its new treasure trove of data about our home galaxy. Astronomers, led by the Leiden astronomer Anthony Brown, describe strange ‘starquakes’, stellar DNA, asymmetric motions and other fascinating insights in this most detailed Milky Way survey to date.
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‘The questions and ideas from students also make me a better researcher’
‘Yamila Miguel brings along immense enthusiasm that sparks over to the students in the lectures,’ her students say about her. ‘She inspires us as scientists-to-be.’ The astronomer teaches master’s students with great passion and interactivity about exoplanets. She has been nominated for the faculty…
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Seven Leiden professors elected new members of KNAW
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.
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Is there oxygen on exoplanets? New telescope finds out
To what extent does exoplanet Proxima b resemble our Earth? And is there some form of life present? Astronomers hope to find answers to these questions with the new European Extremely Large Telescope (ELT). An NWO research grant of €18 million will allow a Dutch consortium to continue building instruments…
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Why do birds flock? Shedding light on collective motions in heterogeneous populations
Leiden physicists Alexandre Morin and Samadarshi Maity study self-organisation and flocking phenomena. They shed light on flocking, which helps to understand how it is possible that birds in a flock don't collide. With plastic microbeads, they create an experimental setup and they developed a mathematical…
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Book Landscapes of Survival sheds new light on the habitation of the Jordan deserts
December 2020 saw the crowning publication of the Landscapes of Survival project by Professor Peter Akkermans. Its main topic is human habitation in marginal environments like the deserts of the Arabian Peninsula. ‘The people living here built their own society, and they would not have viewed it as…
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ESOF2022 Online mini-symposium: The effect of the online world on adolescents
How do digital technologies affect adolescent mental health and resilience? How do we foster a secure online environment? How should we deal with increasing rates of online crimes among adolescents? During the mini-symposium ‘The effect of the online world on adolescents’, presented by the interdisciplinary…
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PhD candidate reveals link between North Korea and southern Africa
North Korea is generally thought to be an isolated country. But, according to PhD candidate Tycho van der Hoog from Leiden’s African Studies Centre, the opposite is in fact the case. North Korea actually has strong alliances with countries in southern Africa. Van der Hoog is trying to shed more light…
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Meet our new colleague Letty ten Harkel: ‘I am interested in what happens when different cultures come together’
In August 2022 we welcome our new colleague Dr Letty ten Harkel as Assistant Professor in Roman and Post-Roman Archaeology. For the past ten years she has built up an impressive track record in the School of Archaeology at the University of Oxford. Read the interview about her background and research…
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Jasper's day
On January 1st Jasper Knoester started as our new dean. How is he finding it? 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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From data to discoveries: machine learning and optimization in space
Lecture
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ISGA seminar 'Evolution of the Cybersecurity Risks of Geolocation'
Lunch seminar
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EAMENA (Endangered Archaeology of the Middle East and North Africa): One database to rule them all?
Lecture
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Webb reveals chemical profile of atmosphere of exoplanet WASP-39 b
An international team of astronomers has revealed the first 'chemical profile' of an exoplanet's atmosphere. The team, including Leiden astronomer Yamila Miguel and provenda Amy Louca, made the profile using so-called Early Release Science data from the James Webb Space Telescope. The results have been…
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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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Planetary Atmospheres and the Search for Signs of Life Beyond Earth
Lecture
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On quantum transport in flat-band materials
PhD defence
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Exploring Strange New Worlds with High-Dispersion Spectroscopy
PhD defence
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‘Data science has crept into the faculties’ DNA’
From 14 to 29 PhD candidates, seven actively involved faculties and, above all, lots of innovative interdisciplinary research, all with data science as the common denominator. The university’s Data Science Research Programme (DSO) has proven so successful that after five years on a start-up grant it…
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Volgens hoogleraar Sarah Wolff zijn EU-migratiedeals een slechte oplossing voor een niet bestaand probleem
Nu in heel Europa rechtse partijen hoog scoren in de peilingen is de verwachting dat de discussie omtrent migratie flink opgeschud gaat worden. Desondanks maant hoogleraar Sarah Wolff tot kalmte.
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Widening the horizons of outer space law
PhD defence
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Online mini-symposium 'The effect of the online world on adolescents''
Mini-symposium
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The Road to Planetary Defense: Cosmic Collisions, Nuclear Explosions, and the Environmental History of Asteroids and Comets
Lecture, Global Questions Seminar
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Quantum dots in microcavities: From single spins to engineered quantum states of light
PhD defence
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Tuning in to star-planet interactions at radio wavelengths
PhD defence
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Student Talk: Venus as Potentially Habitable Planet
Lecture
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Playing dice with the Universe
PhD defence
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LUCIR Lecture: Technological Change and Human Rights
Lecture
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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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Black hole one year later: proof of a persistent shadow
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.
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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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The Hague Space Diplomacy Symposium
Conference
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Dies Natalis
University ceremony
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Closing the Gap 2023 | Emerging and Disruptive Digital Technologies: Regional Perspectives
Conference