In this June 24, 2018 photo released by NASA, the Russian Soyuz MS-09 crew craft, left, and the Northrop Grumman (formerly Orbital ATK) Cygnus space freighter are attached to the International Space Station. All station systems are reported to be stable and the crew is planning to return to its regular schedule of work on Friday.
Six men are now orbiting Earth aboard the ISS, including NASA astronauts Drew Feustel, Ricky Arnold and Serena Aunon, as well as Alexander Gerst of the European Space Agency and two Russian cosmonauts - Oleg Artemyev and Sergei Prokopyev.
It was traced to a hole about 2mm across, located in the most recent Russian Soyuz spacecraft capsule to dock at the space station.
But the six ISS astronauts aboard the ISS were not warned of the space station losing oxygen until the following morning. The leak was found on Wednesday night, and after discovering the hole on Thursday morning, the astronauts did their best to seal the leak with some taping.
After the Russian crew taped over the hole, a sealant on a cloth was stuck over the area.
Though the ISS is built to withstand hits from swirling space material in the form of dust, rocky fragments can at times be too strong or flying too fast for the walls of the lab to take them.
The astronauts are now working with engineers on the ground to assess whether a more robust fix is needed.
Three spaceships are docked at the ISS including the Progress 70 resupply ship and the Soyuz MS-08 and MS-09 crew ships.
Officials continue to monitor the situation as the crew works through its troubleshooting procedures.
Impacts from tiny meteoroids are a permanent threat to the orbiting platform and it was built to withstand the constant bombardment from the dusty fragments that whizz about above the Earth.