Washington (MOL): The effects of zero gravity on our muscles, bones and joints have been extensively studied. But while living in space is known to weaken our immune system, no one is sure how our cells are affected in the long-term by prolonged exposure to a weightless environment. Now a new ISS experiment will seek to answer that very question and it could provide us with important information on the risk of spaceflight to astronauts.

Known as the Cellbox Mission, the experiment was carried to the International Space Station (ISS) by SpaceX’s Dragon capsule, which berthed with the station.