The astronauts' repair work on board the International Space Station (ISS) yesterday (30 August) seems to have been completed.
Ground control noticed a slight pressure drop on the ISS on Wednesday evening (29 August). Yesterday, crew members tracked the leak to a 2-millimeter-wide hole in one of the two Russian Soyuz spaceships currently docked to the orbiting laboratory.
Cosmonaut Sergey Prokopyev, the Soyuz commander, patched the hole with epoxy resin yesterday On-orbit fix still holds: Cabin pressure remains stable, NASA officials wrote today in an update (August 31). Air traffic controllers in Moscow and NASA's Johnson Space Center in Houston continue to monitor pressure levels, NASA added.
"Yesterday has shown once again how valuable our emergency training is, we have been able to pinpoint a small leak in our Soyuz and stop cooperation between crew and control centers on several continents," said Alexander Gerst, European Space Agency astronaut ESA, today via Twitter.
Yesterday it became clear again how valuable our emergency training is. We were able to locate and stop a small leak in our Soyuz, thanks to the good cooperation between the crew and control centers on several continents. pic.twitter.com/Jo0MnIIprL
̵1; Alexander Gerst (@Astro_Alex) August 31, 2018
Russian space agencies have said that the puncture was caused by a micrometeorite, but NASA has not approved .
Soyuz spacecraft have only traveled from the crew to the ISS since NASA grounded their space shuttle fleet in 2011. (However, this situation was soon to change, with spaceX and Boeing private astronaut taxis scheduled to launch manned flights next year).
The hole was found in the orbital module of Soyuz MS-09, which arrived at the ISS in June. The orbital module is the spherical upper compartment of the Soyuz and provides additional space for cargo and crew while the spacecraft is in the air. The module does not survive the journey home to Earth and burns on reentry into the planet's atmosphere as planned.
ISS crew members were never in serious danger due to the recent leak, NASA officials have said] Follow Mike Wall on Twitter @michaeldwall and Google+ . Follow us @SpaceTotcom Facebook or Google+ . Originally published on Space.com .