Open Letter

To Astronomy Departments, Institutions and Societies:
Adopt Sustanability as a Primary Goal.

We, astronomers, astrophysicists,
and global citizens…

  1. Recognize the urgency of the climate crisis and our impact on it.
  2. We also recognize that we have the power to change our current practices.
  3. We call on astronomical institutions worldwide to set an example for the field in mitigating our contribution to the climate crisis by:
  • Naming sustainability as a primary goal.
  • Putting in place specific sustainable practices to lower carbon emissions.
  • Clearly communicating these changes both to their own members and the general public.

Translations available in English, Dutch, Italian, German, Portuguese, Spanish, and Turkish.

PDF of Open Letter     
Press Inquires: Contact
PDF of Press Release
Link to Press Kit Media

More than 2859 astronomers from 81 countries

recognize that there is no Planet B!

Scroll down to see a full list of signees and institutional endorsements.

signatures per country map

Open Letter Team Signatures

Michelle Willebrands

Leiden Observatory

Netherlands

Jacob White

National Radio Astronomy Observatory

United States of America

Volker Ossenkopf-Okada

Universität zu Köln

Germany

Manisha Shrestha

Liverpool John Moores University

United Kingdom

Adam Stevens

International Centre for Radio Astronomy Research / The University of Western Australia

Australia

Gabriele Betancourt-Martinez

Institut de Recherche en Astrophysique et Planétologie

France

Abigail Frost

KU Leuven

Belgium

Tobias Beuchert

European Southern Observatory

Germany

Benjamin Gompertz

University of Birmingham

United Kingdom

Abhijeet Borkar

Astronomický Ústav AV ČR

Czech Republic

Victoria Grinberg

Eberhard Karls Universität Tübingen

Germany

Toby Brown

National Research Council

Canada

Violette Impellizzeri

Leiden Observatory

Netherlands

Leo Burtscher

Leiden Observatory

Netherlands

Knud Jahnke

Max Planck Institute for Astronomy

Germany

Faustine Cantalloube

Laboratoire d'Astrophysique de Marseille

France

Gina Maffey

The Wildeor Foundation

Netherlands

Adrienne Cool

San Francisco State University

United States of America

Wendy Crumrine

University of Southern California

United States of America

Hannah Dalgleish

University of Namibia

United Kingdom

Sarah Deveny

Texas Tech University

United States of America

Debra Fischer

Yale University

United States of America

Additional Siguatures

Simon Portegies Zwart

Leiden Observatory

Netherlands

Paul Easter

Monash University

Australia

Marie Martig

Liverpool John Moores University

United Kingdom

Jessica Thorne

ICRAR-UWA

Australia

Jerome Paufique

ESO

Germany

Daria Dobrycheva

Main Astronomical Observatory of NAS of Ukraine

Ukraine

Ivy Wong

CSIRO Astronomy & Space Science

Australia

David Trevascus

Monash University

Australia

Lilian Garratt-Smithson

University of Western Australia

Australia

Leslie Hunt

INAF

Italy

Bengt Larsson

Department of Astronomy, Stockholm University

Sweden

Behrooz Karami

CSFK

Hungary

Ami Dabokemp

San Francisco State University

United States of America

Sarah Leslie

Leiden Observatory

Netherlands

Anna Cabre

UPenn

United States of America

Patrick Hennebelle

CEA

France

Armando Guerrero

Fresno State University

United States of America

Clementine Hauret

University of Liege

Belgium

Andres Ramos

SRON / RUG

Netherlands

Karen Lee-Waddell

ICRAR/UWA & CSIRO

Australia

Peter Tuthill

University of Sydney

Australia

Alexis Lavail

Uppsala University

Sweden

Robin Baeyens

KU Leuven

Belgium

Denis Defrère

KU Leuven

Belgium

Sebastiaan L. Zoutendijk

Leiden Observatory

Netherlands

Matt Darnley

Liverpool John Moores University

United Kingdom

Alba Domi

Università degli Studi di Genova, INFN-Genova

Italy

Uwe Reichert

spacecrumb / science writer

Germany

Kianusch Mehrgan

Max Planck Institute for Extraterrestrial Physics

Germany

Vlad Popa

Institute for Space Science

Romania

Malcolm Fridlund

Leiden University

Netherlands

Rajan Chhetri

International Centre for Radio Astronomy Research

Nepal

Stefan Kraus

University of Exeter

United Kingdom

Christian Soenke

European Southern Observatory

Germany

Jasmina Lazendic-Galloway

Monash University

Australia

Isabella Lamperti

Centro de Astrobiologia

Spain

Rafael Azeredo

ESO

Germany

Sam McSweeney

ICRAR (Curtin University)

Australia

Dirk van Dam

Leiden Observatory

Netherlands

Lucie Leboulleux

Institut de Planétologie et d'Astrophysique de Grenoble

France

Dario Dorigo

ESO

Germany

Moritz Hütten

Max Planck Institute for Physics, Munich

Germany

Alain Delorme

ESO

Germany

Matthew Kenworthy

Leiden Observatory

Netherlands

Tomas Stolker

Leiden Observatory

Netherlands

Christoph Federrath

Australian National University

Australia

Gilles Bogaert

Observatoire de la Côte d’Azur

France

Daniel Price

Monash University

Australia

Mamadou N'Diaye

Laboratoire Lagrange, Observatoire de la Côte d'Azur

France

Cyril Pannetier

Observatoire de la Côte d'Azur

France

Institutional Endorsements

institutional endorsments

Join Us

A4E invites scientists, astronomy educators, amateurs and students to join in the effort to combat the climate crisis from an astronomical perspective.
Summer Milky Way, Thoreau, NM. J. Lowenthal

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