Missions to Mars could affect astronauts' MINDS and make them mistake happy faces for anger

Travelling to Mars could affect the mind of the astronauts making the long journey - leaving them more likely to misidentify facial expressions, study warns. Current NASA plans could see the first humans step foot on the surface of the Red Planet by the end of the next decade as part of the Artemis mission. University of Pennsylvania researchers found that weightlessness leaves people more likely to see facial expressions as angry - rather than happy or neutral. The phenomenon could endanger missions to the Red Planet, warn scientists, as the astronauts will be weightless on a spaceship together for up to eight months. Studies have shown microgravity causes structural changes in the brain, but it's not fully understood how this translates to changes in behaviour.