The Overprotection of Mars?

A recent commentary paper published in the journal Nature Geoscience argues that planetary protection policies and practices designed to guard solar system bodies from biological contamination from spacecraft need to be re-evaluated because they are “unnecessarily inhibiting” a more ambitious agenda to search for life on Mars.

In the paper, called The Overprotection of Mars, co-authors Alberto G. Fairén of the Department of Astronomy, Cornell University and Dirk Schulze-Makuch of the School of the Environment, Washington State University, also argue that, from an astrobiological perspective, the most interesting missions to “Special Regions” - where, in theory, Mars life could exist or Earth life could survive - are rendered “unviable” as a result of onerous Committee on Space Research (COSPAR) planetary protection protocols and the need to comply with “detailed and expensive sterilization requirements.”