Dear Colleagues,

We are pleased to announce the winners of the Universe 2021 Outstanding Reviewer Award. The Universe Editorial Board and Editorial Team would like to gratefully acknowledge the time and energy dedicated by reviewers in checking the manuscripts submitted to Universe. It is due to their e orts that the high quality of the journal and quick turnaround are maintained.

The following 10 reviewers have been selected to receive Universe 2021 Outstanding Reviewer Award for the quantity, timeliness, and quality of their reviews in 2021:

Amit Kashi
Ariel University, Ariel, Israel

Dominik Elsaesser
Technical University of Dortmund, Dortmund, Germany

Isaac Tutusaus
Instituto de Ciencias del Espacio, Barcelona, Spain

Jose A.R. Cembranos
Universidad Complutense de Madrid, Madrid, Spain

Kazuharu Bamba
Fukushima University, Fukushima, Japan

Przemyslaw Malkiewicz
National Centre for Nuclear Research, Warsaw, Poland

Szymon Piotr Harabasz
Technical University of Darmstadt, Darmstadt, Germany

Theocharis Kosmas
University of Ioannina, Ioannina, Greece

Viktor Toth
Perimeter Institute for Theoretical Physics, Waterloo, Canada

Vitor De Souza
Universidade de São Paulodisabled, Sao Paulo, Brazil

Each of the winners will receive the following:

• An electronic certificate;
• A chance to publish a paper free of charge in Universe by the end of 2022.