Martian life may be dormant and hidden

Mars life, if it exists today, is plausibly living in dormant states or below the surface where present instruments struggle to detect it. That means negative detections from rovers or orbital surveys are weak evidence of absence and that mission design must prioritize subsurface sampling and contamination controls. — This reframes Mars exploration priorities and planetary‑protection policy: search strategies, sample‑return rules, and public expectations should account for hard‑to‑detect, dormant biosignatures.