Space

First Martian Life Probably Destroyed the Planet Through Climate Change and went Extinct

By Aazam

October 16, 2022

New research suggests ancient microbial life on Mars may have caused climate change, leading to its demise

Climate models simulated hydrogen-consuming, methane-producing bacteria on Mars 3.7 billion years ago

The model proposes that the gas compositions and relative distances of Earth and Mars explain why life evolved on Earth but died on Mars

Mars relied on a heat-trapping fog of carbon dioxide and hydrogen to support life

Ancient Martian bacteria ate hydrogen and created methane, consuming their planet's heat-trapping blanket and rendering Mars too cold for complex life

Traces of methane have been identified in Mars' scant atmosphere by satellites and NASA's Curiosity rover, which could be evidence that bacteria still exist

The scientists believe their findings show that life may not be self-sustaining in every favorable setting, and that it can quickly wipe itself out by destroying its own underpinnings

Boris Sauterey, an astrobiologiste à Paris' Institut de Biologie de l'Ecole Normale Supérieure, led the investigation