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

Jiayi Sun

The Ohio State University

United States of America

Joseph Obu

University of Calabar, Calabar/ Nigeria

Nigeria

Alexandre Gallenne

Nicolaus Copernicus Astronomical Centre

Poland

Rain Kipper

Tartu University

Estonia

Robin Metcalfe

York University

Canada

Moritz Fischer

Hamburg Observatory

Germany

Richard Gelderman

Western Kentucky University

United States of America

Mischa Breuhaus

Max-Planck-Institut für Kernphysik

Germany

Steffen Neutsch

University of Hamburg

Germany

Daniel Suson

Purdue University Northwest

United States of America

Stella Ocker

Cornell University

United States of America

Timo Anguita

Universidad Andres Bello

Chile

Virginia Cunningham

University of Maryland

United States of America

Michael Zacharias

LUTh, Observatoire de Paris

France

Mary MacDonald

Framingham State University Planetarium

United States of America

Mariusz Tarnopolski

Jagiellonian University

Poland

Manuel Delfino Reznicek

Universitat Autònoma de Barcelona

Spain

León Sosapanta

National University of Colombia

Colombia

Thomas Pasini

Hamburg Observatory

Germany

Brendan Mullan

Blue Marble Space Institute of Science

United States of America

Ana Escorza

ESO

Chile

Iuliia Grotova

Max Planck Institute for extraterrestrial physics

Germany

Francisco Forster

Universidad de Chile

Chile

Gareth Hughes

Cherenkov Telescope Array Observatory

Germany

Suvrat Rao

University of Hamburg

Germany

Roberto Raddi

Universitat Politècnica de Catalunya

Spain

Fernando Selman

ESO

Chile

Cameron Van Eck

University of Toronto

Canada

Armin Rest

STScI

United States of America

Jonas Haase

Max-Planck Institute for Extraterrestrial Physics

Germany

Brad Tucker

Mount Stromlo Observatory, the Australian National University

Australia

Jeffrey Scargle

NASA Ames Research Center

United States of America

Laetitia Rodet

Cornell University

United States of America

Kamber Schwarz

University of Arizona

United States of America

Laura García

IFUSP

Brazil

Alberto Masini

SISSA

Italy

Michael Wiest

Universität zu Köln

Germany

frederic gillardo

lapp-CNRS

France

Antti Tamm

Tartu Observatory, University of Tartu

Estonia

Lucas Augusto Leardini Siconato

Universidade de São Paulo

Brazil

Luca Giunti

APC Laboratoire

France

Pedro Henrique Cezar

Universidade de São Paulo (USP)

Brazil

Meredith Hughes

Wesleyan University

United States of America

Turgay Caglar

Leiden Observatory

Turkey

Brankica Kubátová

Astronomical Institute of the Czech Academy of Sciences

Czech Republic

Georg Lamer

Leibniz-Institut für Astrophysik

Germany

Arif Solmaz

Çağ University

Turkey

Nathan Feuillard

IRAP

France

Bryce Hobbs

The University of Texas at Austin

United States of America

Tuğba Boztepe

Istanbul University

Turkey

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.