Journal Highlights

An explanation for the formation of hydrogen peroxide on the surface of Mars

Editor’s Highlight—

Understanding the fate of organics on Mars is critical to the search for biosignatures in the near-surface materials. This manuscript illustrates how cosmic radiation acting on perchlorates may produce additional oxidants in the form of hydrogen peroxide (H2O2) that may transform organics. While H2O2 has been detected on the surface of Mars, there have been few explanations of its formation. This paper presents a plausible formation mechanism, based on the presence of the commonly occurring perchlorate salts.