science π Mars trip could impact bone density, study warns π¦΄
A mathematical model suggests a round-trip Mars mission could last roughly three years and affect bone density. Researchers from NASA Ames and Stanford used bone-density data from 69 astronauts on short flights to build this projection. The model predicts significant bone mineral density loss for conjunction-class missions lasting 1,000 to 1,200 days. This extrapolation doesn't account for countermeasures like exercise, which were absent in the initial 69 astronaut data. Therefore, this should be viewed as a stress test for mission planning, not a final diagnosis.