Prolonged Time In Space Makes Astronauts' Hearts Shrink: Study

Staying in space for long durations can lead to shrinkage of astronauts' heart and exercise is not the cure for it, revealed a new study published in the journal Circulation. Reportedly, the study was conducted on former astronaut Scott Kelly, whose heart was exposed to longer periods in space and had shrunk despite hours of exercise. Notably, the study has come amid countries advancing towards space missions across the globe.