Our Moon's 4-Billion-Year Impact Record Suggests Meteorites Didn't Supply Earth's Water
PR Newswire —
High-precision oxygen isotopes in Apollo lunar soils reveal a persistent impactor fingerprint, showing that impacts contributed only a tiny fraction of Earth's water WASHINGTON and HOUSTON, Jan. 20, 2026 /PRNewswire/ -- A long-standing idea in planetary science is that water-rich...