The looming deoxygenation event that could impact Earth serves as a stark reminder of the fragility of our planet’s life-supporting systems. This realization aligns with the age-old wisdom encapsulated in the proverb, “forewarned is forearmed.” The persistent efforts to discover habitable planets gain even greater significance in the face of this impending challenge. Such endeavors become not just a pursuit of scientific curiosity but a vital necessity, given the potential future scarcity of oxygen on Earth.