Mars Was Once a Warm, Wet World: New Research Upends Decades of Cold-and-Icy Orthodoxy
Submitted by Anonymous (not verified) on Mon, 02/16/2026 - 12:00For decades, planetary scientists have wrestled with a fundamental question about the Red Planet: Was ancient Mars a warm, wet world with flowing rivers and standing lakes, or was it a frozen wasteland where ice occasionally melted under special circumstances? A sweeping new study, published in the journal Nature Geoscience, now argues forcefully for the former — and in doing so, challenges a scientific consensus that had been hardening for years.