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

Keila Ertini

Instituto de Astrofísica de La Plata

Argentina

Lorenzo König

Université de Liège

Belgium

Andy Casey

Monash University

Australia

Catarina Lobo

Instituto de Astrofísica e Ciências do Espaço/Centro de Astrofísica da Universidade do Porto

Portugal

Olivia Jones

UK ATC

United Kingdom

Alessandra Zanichelli

INAF - Istituto di Radioastronomia

Italy

Shaun Brown

Astrophysics Research Institute, Liverpool John Moores

United Kingdom

Daniel Herman

University of Oslo

Norway

David Rosario

Durham University

United Kingdom

Jay Kalinani

University of Padova, Italy

Italy

Abhijit Bendre

EPFL

Switzerland

Maurizio Falanga

International Space Science Institute, Bern, Switzerland

Switzerland

Peter Marinos

The University of Adelaide

Australia

Nimesh Patel

Center for Astrophysics | Harvard & Smithsonian

United States of America

Roberto Silvotti

INAF-OATo

Italy

Charles Barclay

Blackett Observatory

United Kingdom

Gustavo Rojas

NUCLIO

Portugal

Kay Graf

ECAP - University of Erlangen

Germany

Angela Kochoska

Villanova University

United States of America

Paul van der Werf

Leiden Observatory

Netherlands

Miguel Llamas Lanza

Institute de Recherche Astrophyisique et Planetologie (IRAP)

France

Markus Kasper

ESO

Germany

Francesco Longo

University of Trieste and INFN Trieste

Italy

Brendan O'Brien

Astrophiz Podcast

Australia

Sílvia Vicente

University of Lisbon - IA

Portugal

Serena Benatti

INAF - Astronomical Observatory of Palermo

Italy

Reinout van Weeren

Leiden Observatory

Netherlands

Etienne Pointecouteau

IRAP

France

Nikhil Sarin

Monash University

Australia

Maximilian Abitbol

University of Oxford

United Kingdom

Karl Mannheim

Universität Würzburg

Germany

Thomas Dauser

Remeis Observatory & ECAP, FAU

Germany

Matthieu RENAUD

LUPM, CNRS/IN2P3, University of Montpellier

France

Michel Blanc

IRAP

France

Adriano Agnello

Niels Bohr Institute

Denmark

Baptiste Klein

University of Oxford

United Kingdom

José Rodrigues

INSTITUTE OF ASTROPHYSICS AND SPACE SCIENCES

Portugal

Mark McCaughrean

European Space Agency

Netherlands

Sylvain Chaty

University of Paris

France

Karin Lind

Stockholm University

Sweden

Sebastian Vider

Universität zu Köln

Germany

Aldo Morselli

INFN Roma Tor Vergata

Italy

Elena Masciadri

INAF - Istituto Nazionale di Astrofisica

Italy

Roberto Angioni

Italian Space Agency (ASI) / National Institute for Nuclear Physics (INFN)

Italy

Oliver Ricken

Max-Planck-Institute for Radioastronomy

Germany

Anna Piersimoni

INAF - Osservatorio Astronomico d'Abruzzo

Italy

Carlo Giocoli

INAF - OAS Bologna

Italy

Alain Blanchard

IRAP

France

Sherry Suyu

Max Planck Institute for Astrophysics / Technical University of Munich

Germany

Rovina Pinto

University of Cologne

Germany

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

Support Us

Help us to address climate change
from an astronomical perspective.