In dozens of study rooms, libraries and laboratories, passionate scientists – with the support of the donors of the Leiden University Fund – are working on a fundamental understanding of the world and the people around us. They make the unknown known and push the boundaries of existing fields of sci…

Recent study led at the Leiden Observatory has observed Orion with unprecedented detail. New data from the Atacama Large Millimeter/submillimeter Array (ALMA) and other telescopes have been used to create this stunning image showing a web of filaments in the Orion Nebula. These features appear red-hot…

Rychard Bouwens from the Leiden Observatory is the first scientist in the Netherlands to be assigned a Large Programme on the state-of-the-art ALMA telescope in Chile. With his team, he wants to use the unique capabilities of the billion-euro facility to investigate the build-up of massive galaxies…

Promotores: Prof.dr. E.F. van Dishoeck, Prof.dr. C.P. Dullemond

The work presented in this thesis is based on ALMA surveys of protoplanetary disks in three star-forming regions: Lupus, OMC-2, and NGC 2024.

A large diversity of exoplanetary systems has been found, but it is still unclear what drives this diversity.

The focus of this thesis is how stars like our Sun and planets like Jupiter, Saturn, and Earth are formed.

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…

Dishoeck

The ALMA Local Expertise Group (Allegro) is located in the Leiden Observatory (Sterrewacht). Professor Ewine van Dishoeck: ‘The Netherlands has played an important role in establishing ALMA. Thanks to this subsidy, we can now reap the scientific benefits.'

Large telescopes can look so deep into the Universe that they can also look back billions of years in time. From 2018, the successor of the Hubble Space Telescope, the James Webb Space Telescope, will be able to see the period just after the Big Bang, when the first stars and galaxies formed. Astronomers…

The Leiden astronomer Huib van Langevelde) has been selected as the new director of the Event Horizon Telescope (EHT). The EHT is a collaboration involving about 350 scientists from 18 countries. It combines the ALMA array in Chile with sub-millimeter telescopes around the world and published the first…

Astronomers want to understand the Universe, from the Big Bang to the present day, and what the future will hold. In Leiden they focus on two key questions: ‘How did stars and planets originate’ and ‘How were galaxies and black holes formed in the young Universe?’ A new generation of telescopes – just…

Leiden University is proud of its alumni. Alumni contribute in many different ways to the growth and development of the university. The university also contributes to ongoing personal and professional development of her alumni.

Planets are formed in disks of gas and dust around young stars.

Promotor: Prof.dr. E.F. van Dishoeck, Co-Promotor: M.R. Hogerheijde

Recently, studies have shown the similarities and differences in sources of meaning between religionists, ‘nones’ and atheists (see several studies of Schnell and others). The present study that will be conducted in three European countries tries to clarify the relationship between meaning giving and…

This thesis examines the link between simple molecules and the underlying structure and chemistry within protoplanetary disks - the birthplaces of planets.

This thesis presents pioneering work on the panchromatic emission of some of the most luminous galaxies in the early Universe: star forming galaxies and active galactic nuclei.

In the large gas clouds between the stars, chemical reactions take place under extreme conditions, giving rise to both small molecules, such as water and common salt, as well as large complex molecules that can serve as the building blocks of life. This is known as astrochemistry and it is something…

The Minor in Teaching was introduced in 2009 as a new initiative to introduce and prepare bachelor students for teaching. Student numbers are low, however, especially of mathematics and science students.

Interested in studying Ancient History at Leiden University? Find out what our alumni said about this master's programme.

This thesis investigates how galaxies form and what diversifies the evolutionary histories of galaxies.

Research at Leiden Observatory spans the full width of modern astrophysical enquiry. It is based on observation, theory, simulation, and experiment. Two broad clusters characterize the ongoing research. Within each theme, researchers carry out their personal and specialized research programme. The two…

In 2015, Jorryt Matthee thought he discovered an extremely distant galaxy called CR7, which lacked elements heavier than helium. Three years later, he shows with measurements using the ALMA telescope that the galaxy does have carbon after all, and even in normal concentrations. The American Astronomical…

The short film Alma & Esperanza , directed by Itandehui Jansen, a PhD candidate (directing supervisor Professor Dr. Kitty Zijlmans) of the Leiden University Academy for Creative and Performing Arts, has been selected to the Short Film Corner of this year’s edition of the Cannes International Film Fe…

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.

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.…

A Dutch-led team of astronomers has discovered that high-mass stars are formed differently from their smaller siblings. Whereas small stars are often surrounded by an orderly disk of dust and matter, the supply of matter to large stars is a chaotic mess. The researchers used the Atacama Large Millimeter/submillimeter…

Observations made with the ALMA telescope in Chile and ESA’s Rosetta mission, have detected the faint molecular fingerprint of methyl chloride in gas, a chemical commonly produced by industrial biological processes on Earth, around both an infant star and a comet. Methyl chloride, also known as Freon-40,…

Itandehui Jansen graduated from the Netherlands Film and Television Academy in Amsterdam and is currently making films as part of her PhD project at Leiden University. And with great success. Her films have been shown at the IDFA and the Short Film Corner of Cannes, and have won a number of prizes.…

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.

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.

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.

Researchers at Leiden Observatory study the fundamental physics that creates structure in the Universe. These processes collect matter into galaxies and gas into stars. With the use of powerful telescopes and advanced calculations and computer simulations, Leiden astronomers seek to understand the origin,…

At Leiden Observatory, researchers investigate the origin of stars and their planetary systems. They detect and characterize planets around other stars (exoplanets). They study how stars and planets form. And they follow molecules from interstellar clouds to nascent planet systems. This way they address…

Researchers at Leiden Observatory study the fundamental physics that creates structure in the Universe. These processes collect matter into galaxies and gas into stars. With the use of powerful telescopes and advanced calculations and computer simulations, Leiden astronomers seek to understand the origin,…

ALMA has observed stars like the Sun at a very early stage in their formation and found traces of methyl isocyanate - a chemical building block of life. This is the first ever detection of this prebiotic molecule towards solar-type protostars, the sort from which our Solar System evolved. The discovery…

Research using the ALMA telescope by scientists including Leiden's John Tobin and Steven Bos has produced the first images of the water snow line within a protoplanetary disc. Publication in Nature on 14 July.

New ALMA observations show there is ordinary table salt in a not-so-ordinary location: 1,500 light-years from Earth in the disk surrounding a massive young star. Though salts have been found in the atmospheres of old, dying stars, this is the first time they have been seen around young stars in stellar…

For the first time, astronomers have detected the presence of complex organic molecules, the building blocks of life, in a protoplanetary disc surrounding a young star. The discovery reaffirms that the conditions that spawned the Earth and Sun are not unique in the Universe. The results are published…