NASA wants to protect Moon and Mars from human contamination - Engadget

While the space agency has been sending rovers and other unmanned spacecraft to the Moon and Mars, it’s concerned about the biological contaminants associated with human presence.

At the same time, NASA wants to ensure its crewed missions don’t cause adverse changes to Earth’s environment with the introduction of contaminants from outer space.

The agency says it will use data and experience gained via ground-based tests to conjure guidelines and develop capabilities to monitor biological processes associated with human presence in space exploration.