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.

The first StA-CES Journal Club of the theme "Observation" for the "Mapping the Approach to Exoplanets"–programme takes place on   Monday 17 May 2021,   13:00h   on MS Teams.
Oliver Herbort will present a paper by Seager et al. (2016) on 'Toward a List of Molecules as Potential Biosignature Gases for the Search for Life on Exoplanets and Applications to Terrestrial Biochemistry'.


Spring 2021 Lunch time meetings

The theme of 2021 is "Mapping the Approach to Exoplanets":
1 March 2021 – Theme Value & Action
5 April 2021 – Theme Communication
10 May 2021 – Theme Characterisation
7 June 2021 – Theme Observation
All meetings are from 1–2pm and will be held on MS Teams.

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  (Sep 2020)
Article:  The hot dayside and asymmetric transit of WASP-189 b seen by CHEOPS  (Nov 2020)
Press release:  New planets found in unique system with CHEOPS  (Jan 2021)
Article:  Six transiting planets and a chain of Laplace resonances in TOI-178  (Jan 2021)

"Habitats beyond Earth"

St Andrews is hosting the Astrobiology Society of Britain 2021 conference "Habitats beyond Earth" on 18-20 October 2021. We aim to bring members of the astrobiology, geology, geochemistry, planetary atmospheres, physics, astronomy, remote-sensing, and exoplanet science communities together to explore the environmental factors necessary for supporting life on early Earth and on other planets. The conference will span three broad themes:
  1. How to discover (and characterise) candidate planets or moons
  2. How to build a habitable environment
  3. Current missions and the search for life
The "Habitats beyond Earth" organising team are Elyse Allender, Arola Moreras-Marti, Eva Stueeken, Thomas Wilson, Oliver Herbort, and Claire Cousins.
Astrobiology Conference October 2021

Centre for Exoplanet Science Book Club

Becky Chambers

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 will be meeting about once every two months in the evening.

The next book we are reading is 'To Be Taught, If Fortunate' by Becky Chambers (2019).
From Goodreads:   "In her novella, author Becky Chambers imagines a future in which, instead of terraforming planets to sustain human life, explorers of the solar system instead transform themselves. At the turn of the twenty-second century, scientists make a breakthrough in human spaceflight. Through a revolutionary method known as somaforming, astronauts can survive in hostile environments off Earth using synthetic biological supplementations."
Our meeting will tentatively take place Tuesday 15 June 2021, 7–8pm on MS Teams. If you have questions connected to the Book Club, please contact Emma Puranen.

Art & Science

●  Mineral Snowflakes   An audiovisual piece created by Sonia Killmann 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 Conservatoire 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.
SLAC five art works 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".