About the Authors

Jeffrey M. Dick

jmdick@asu.edu

Affiliation School of Earth and Space Exploration, Arizona State University, Tempe, Arizona, United States of America

Everett L. Shock

Affiliations School of Earth and Space Exploration, Arizona State University, Tempe, Arizona, United States of America, Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JMD ELS. Analyzed the data: JMD ELS. Wrote the paper: JMD ELS.