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

Sebastian Marino

University of Cambridge

United Kingdom

Maud Langlois

CNRS - CRAL

France

Felix Pötzl

Max-Planck-Institut für Radioastronomie

Germany

Roger Ferlet

IAP-CNRS/Sorbonne Université

France

Anaël Wünsche

Observatoire des Baronnies Provençales

France

Alexandre Costa

European Association for Astronomy Education

Portugal

Theresa Maiyamma

St. Peter's College Garaku

Nigeria

Joana Kramer

Max Planck Institute for Radio Astronomy

Germany

Catherine Espaillat

Boston University

United States of America

Lasse Berthelsen

DTU Space

Denmark

Dilem GÖKTAŞ

Atatürk Universty

Turkey

Yik Ki Ma

Australian National University

Australia

Alessandro Carosi

University of Geneva

Switzerland

Aaron Parsons

UC Berkeley

United States of America

Bruno Quint

NOIRLab

Chile

Sylvain Bouley

Université Paris Saclay

France

Sandrine Lescaudron

Institut d'Astrophysique de Paris (IAP)

France

Sneh Kesari

Astrophile Education Service

India

Giuseppe Cimo

Joint Institute for VLBI ERIC

Netherlands

Bruno MONFLIER

La Ferme des Etoiles

France

Patrick Vallely

The Ohio State University

United States of America

Brittany Kamai

UC Santa Cruz & Caltech

United States of America

Esra Bulbul

MPE

Germany

Samaiyah Farid

Yale

United States of America

Becky Flores

Georgia State University

United States of America

Todd Henry

RECONS

United States of America

Dan Johns

Georgia State University

United States of America

Raphaël Peralta

CEA

France

Diego de la Fuente

Universidad de Alicante

Spain

José Roberto Rodrigues Leal

IAG - Universidade de Sao Paulo

Brazil

Alceste Bonanos

National Observatory of Athens

Greece

Enrico Kotze

South African Astronomical Observatory

South Africa

Urs Schäfer

GLOBE Institute, University of Copenhagen

Denmark

Sarah Vigeland

University of Wisconsin-Milwaukee

United States of America

Tian Li

Leiden University

China

Pacôme Delva

Paris Observatory, Sorbonne University

France

Roland Lehoucq

CEA Saclay

France

Giovanna Senatore

Stanford University

United States of America

William Fiore

West Virginia University

United States of America

Mogaba SEKO

NRF/SARAO

South Africa

Mike Kriele

ICRAR - Curtin University

Australia

Qi Chu

University of Western Australia

Australia

Masato Onodera

Subaru Telescope, National Astronomical Observatory of Japan

United States of America

Ross Dobson

University College London

United Kingdom

Lokesh Mishra

University of Geneva

Switzerland

Eva K. Grebel

Heidelberg University

Afghanistan

Yiannis Tsapras

Heidelberg University

Germany

Maxime Rey

Centre de recheche astrophysique de Lyon (CRAL) - École Normale Supérieure de Lyon (ENS)

France

Jaimie Sheil

Monash University

Australia

Jean-Baptiste Vielfaure

Paris University

France

Institutional Endorsements

institutional endorsments

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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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