NASA astronauts prepare to evacuate International Space Station

NASA has ordered astronauts to prepare for evacuation from the International Space Station (ISS) over 'worsening air leaks'.The space agency told astronauts to shelter in their spacecraft and prepare for potential evacuation on Friday as a Russian crew attempts to fix a worsening leak.The four astronauts of NASA's Crew-12 mission on the station - two U.S. astronauts, a French astronaut and a Russian cosmonaut - got orders from NASA mission control at 9:04 a.m. ET on Monday to enter their Crew Dragon spacecraft docked to the station.The crew were told to don their spacesuits in case the air leak warrants an emergency evacuation, a NASA official said.