Venus Is Earth's Twin, Yet Its Surface Melts Lead at 467°C — Blame the Runaway Greenhouse Effect
Venus is almost the same size and mass as Earth. Yet its surface sits at 467°C, hot enough to melt lead, under 93 times Earth's air pressure — like standing 900 meters deep in an ocean. The same raw materials, the same neighborhood, but a carbon dioxide atmosphere that never lets heat escape sent one twin down a very different path.