THINK TANK DAILY™ · ISSUE 067 · SCIENCE

Earth’s Water Was Probably Mostly Chondritic. The Data Still Can’t Tell Us the Percentage.

Earth’s ocean-accessible water is most defensibly treated as predominantly chondritic material acquired during or after accretion, with a possible nebular contribution whose proportion is not yet bounded by the evidence. The deliberation established a source ranking, not a mixing ratio.