An unexpected incident aboard the International Space Station (ISS) has raised concerns over the safety of cargo deliveries from Earth. On November 23, the Russian Progress MS-29 cargo spacecraft docked with the ISS,

"After opening the Progress spacecraft's hatch, the Roscosmos cosmonauts noticed an unexpected odor and observed small droplets, prompting the crew to close the Poisk hatch to the rest of the Russian segment," NASA said in a statement on Sunday.

The hatch between a Russian cargo ship and the International Space Station (ISS) is finally open after a foul stench initially prompted astronauts to seal it off. The good news is, the smell has not lingered and NASA may have figured out the cause.

There has been another problem with Russian technology on the ISS. The smell on board a space capsule was so bad that the hatch was closed again.

Russian cosmonauts aboard the ISS were forced to seal a hatch and don protective equipment after the arrival of a cargo vessel brought with it a bizarre smell.