The complete record of what was found 85 centimeters below the surface, and what is still being understood.
Atmospheric sensors detected methane at 847 parts per billion — background Mars methane is 0.5 to 1.5 ppb. Depth estimate from diffusion modeling: 70 to 95 centimeters.
Alina reviewed the data and said nothing for 47 seconds, then: that is not geological. The Sol 3 transmission to Earth was 4,847 words. Carter sent it at 15:07:00.
Earth's response arrived 44 minutes after transmission: seventeen protocol requirements, four containment directives, and one sentence — all surface activity within fifty meters of the anomaly is suspended pending review.