Nov 29, 2025 07:13 PM
(This post was last modified: Nov 30, 2025 05:49 AM by C C.)
https://knowridge.com/2025/11/living-mic...e-on-mars/
EXCERPTS: Scientists have discovered living, methane-producing microbes deep inside a massive meteorite impact crater in Sweden, and the find could change the way researchers think about where life can survive — on Earth and beyond.
The study focused on the Siljan crater, one of Europe’s largest known impact structures, formed when a meteorite struck the planet hundreds of millions of years ago.
[...] This is the first time living methane-producing organisms have been confirmed in an impact crater on Earth, showing that these dramatic geological sites can become long-term habitats for life under the right conditions.
[..] While the technical details are complex, the key point is simple: these organisms are uniquely adapted to survive in a dark, deep, high-pressure environment where there is no sunlight. Instead of using light for energy, they rely entirely on chemical reactions with the surrounding rock and fluids.
This discovery has important implications for Mars. Scientists have detected small bursts of methane in the Martian atmosphere over the years, and some of these areas are located near ancient impact craters.
While methane can be produced by non-living geological processes, it is also often linked to biological activity on Earth.
The fact that microbes can thrive in Earth’s impact craters strengthens the idea that similar environments on Mars might once have supported — or could still support — microbial life beneath the surface... (MORE - missing details)
EXCERPTS: Scientists have discovered living, methane-producing microbes deep inside a massive meteorite impact crater in Sweden, and the find could change the way researchers think about where life can survive — on Earth and beyond.
The study focused on the Siljan crater, one of Europe’s largest known impact structures, formed when a meteorite struck the planet hundreds of millions of years ago.
[...] This is the first time living methane-producing organisms have been confirmed in an impact crater on Earth, showing that these dramatic geological sites can become long-term habitats for life under the right conditions.
[..] While the technical details are complex, the key point is simple: these organisms are uniquely adapted to survive in a dark, deep, high-pressure environment where there is no sunlight. Instead of using light for energy, they rely entirely on chemical reactions with the surrounding rock and fluids.
This discovery has important implications for Mars. Scientists have detected small bursts of methane in the Martian atmosphere over the years, and some of these areas are located near ancient impact craters.
While methane can be produced by non-living geological processes, it is also often linked to biological activity on Earth.
The fact that microbes can thrive in Earth’s impact craters strengthens the idea that similar environments on Mars might once have supported — or could still support — microbial life beneath the surface... (MORE - missing details)
