Understanding how unusual Earth is may help humanity to appreciate how special it is.

August 2019: More than 4100 planets are known to orbit stars far beyond the solar system, in planetary systems very different to our own. There may well be hundreds of billions of extrasolar planets in the Milky Way alone. These planets include planetary types not found among the eight planets that orbit our Sun, including mini-Neptunes, super-Earths, rogue or nomad planets and hot gas-giant planets. Are we therefore alone in the Universe? To answer this pertinent question, we seek to understand the formation and evolution of our own solar system and the reasons for this rich planetary diversity.

The Centre for Exoplanet Science brings together researchers from different disciplines to find out how planets form in different galactic environments, how their atmospheres evolve, and the relation between the evolutionary history of planets and the emergence of life. We are further interested in the moral, ethical and technical aspects of detecting existent or extinct extra-terrestrial life in distant exosystems, or within our own solar system, and the significance of such a discovery for our societies.

The Centre for Exoplanet Science builds on the rich legacy of the SUPA Astrobiology initiative.

The Centre for Exoplanet Science currently combines research from the School of Physics & Astronomy (Astronomy), the School of Earth and Environmental Sciences, the Department of Philosophy, the School of Biology, the Department of Social Anthropology and the School of Modern Languages (Russian) at the University of St Andrews.

We are collaborating with the   Centre for Exoplanet Science   at the University of Edinburgh.


StA-CES Journal Club

StA-CES members present research papers from their research areas.
Contact: Patrick Barth, Ancy Anna John, Till Käufer.

Monday 18 January 2021,   13:00h   on MS Teams:
Patrick Barth will present his recent publication:
'MOVES IV. Modelling the influence of stellar XUV-flux, cosmic rays, and stellar energetic particles on the atmospheric composition of the hot Jupiter HD 189733b'


Spring 2021 Lunchtime Meetings

1 February 2021 – The StA-CES Book club leads this lunch time meeting and has invited Paul March-Russell (editor of Foundations) to join us to talk about science and science fiction.
The theme of 2021 is "Mapping the approach to exoplanets" :
1 March 2021 – Theme Value & Action
5 April 2021 – Theme Communication
3 May 2021 – Theme Characterisation
7 June 2021 – Theme Observation
All meetings are from 1-2pm and will be held on MS Teams.
The 5th NoR CEL conference explores similar aspects from the biological perspective.

Centre for Exoplanet Science Book Club

Contact by Carl Sagan

The aim of the book club is to read and discuss books that feature thought-provoking portrayals of exoplanet environments (and in a lot of cases also extraterrestrial life). In discussing these works, we can learn from each other as well as from the books – they might even give us some ideas for our own research.
All members are welcome to join at any time! We wil be meeting about once every two months in the evening.
The next book we are reading is 'Contact' by Carl Sagan (1985).
'Contact' is a classic that deals with the consequences – social, political, and scientific – of what happens when humanity receives a message from an intelligent extraterrestrial civilization.
Our meeting is scheduled for Tuesday 9 February 2021, 7-8pm on MS Teams. If you have questions please contact Emma Puranen.

Art & Science

Mineral Snowflakes   An audiovisual piece created by Sonia Killman in collaboration with Dominic Samra, representing the formation of clouds on a Jupiter-like exoplanet through sound.
This piece was produced for 'Intersections', a concert of new music created in collaboration between researchers at the University of St Andrews and composers at The Royal Conservetoire of Scotland, and The Laidlaw Music Centre as part of Explorathon 2020, Scotland's component of European Researchers' Night.
Marc Horemans is a Belgian artist who also leads the Multidisciplinary Studio Projectatelier of SLAC, Academy of Fine Arts Leuven, Belgium. Within the studio, and in collaboration with CHAMELEON, a new platform 'Ex(p)oplanet' has been set up, aiming to bridge art and science.
Projectatelier invites the scientists and PhD students from CHAMELEON to interact on how to develop concepts in Art and STEAM (Science, Technology, Engineering, Art and Mathematics). The primary question is: "How can art and science meet, strengthen and challenge each other, and lead to new insights?"
The collaboration of Projectatelier with KU Leuven (Belgium) resulted in the 2017 exhibition "PiLoT#1".

Virtual Laboratories for Exoplanets and Planet-Forming Disks

CHAMELEON Retrieving (from data), predicting (from detailed models) and thereby understanding the link between the chemical composition of planet-forming disks and exoplanet atmospheres is a challenging task. In the CHAMELEON Marie Curie Innovative Training Network (MC-ITN), we focus on the development of Virtual Laboratories which will be the crucial tool to analyse in detail current and future disk and exoplanet observations.
Virtual laboratories play a key role in simulating yet unexplored physico-chemical environments to answer the questions whether our Solar System is unique and how life emerged. In these Virtual Laboratories, we combine existing, well-tested theoretical modelling tools of varying complexity to explore their combined strength, limits, and the need for new techniques. Virtual Laboratories use advanced numerical and statistical methods that comprise input from astrophysics, computational chemistry, laboratory and theoretical physics, geosciences, mathematics, and computer sciences.

CHEOPS Mission Update

CHEOPS Mission Update

Following its launch in mid-December 2019 and subsequent orbital manoeuvers, the Swiss-led ESA exoplanetary transit-photometry space mission CHEOPS has undertaken an extensive commissioning phase. The spacecraft recently passed its in-orbit commissioning review. Throughout its lifetime so far St Andrews's and StA-CES's very own Tom Wilson has conducted the lion's share of the data analysis that led to validation of the mission's prime science performance requirements and paved the way from commissioning to imminent science observations!
Press release: First results from Cheops: ESA's exoplanet observer reveals extreme alien world
Article: The hot dayside and asymmetric transit of WASP-189 b seen by CHEOPS