A crew of astronauts aboard the International Space Station (ISS), led by Commander Sunita Williams, quickly responded to an emergency triggered after a strange "toxic" smell was detected when opening a cargo spacecraft.

An unusual toxic smell was detected by the ISS crew after opening the Progress MS-29 cargo spacecraft. The astronauts found droplets inside and promptly sealed the hatch to isolate the potential hazard.

Studies have revealed that crew members sleep significantly less during spaceflight compared to pre- and post-mission periods.