“With perhaps a 50-50 chance that any #Martianlife developed from a #mirrorbiology, the return of samples from #Mars has transformed from a scientific opportunity to a potential #existentialrisk.” thebulletin.org/2025/11/mirr...

Black swans from the red plane...
Black swans from the red planet—Could NASA bring back “mirror life” from Mars?

NASA and the European Space Agency plan to bring samples back from Mars. Could they harbor a type of life that scientists warn could trigger mass extinctions on Earth? 

Bulletin of the Atomic Scientists