International Space Station has a leak

NASA officials said the small leak was discovered around 7 p.m. Wednesday by flight controllers in Houston and Moscow while the crew was sleeping, but because the leak was so minor mission control did not wake the astronauts. "A micro fracture was found, most likely it is damage from the outside".

NASA is not now willing to comment on what caused the leak. Flight controllers had been monitoring the small drop in pressure overnight, deciding to let the crew sleep as the hole presented no danger.

The space station crew is conducting troubleshooting and fix work on the leak, NASA explained in a blog post Thursday morning.

Upon finding the source of the leak, a two millimeter (0.08 inch) hole in the orbital compartment of the Soyuz MS-09, astronaut Alexander Gerst from the European Space Agency plugged it with his thumb.

The leak rate was minuscule, and the crew put Kapton tape over the hole to slow the loss of pressure even further. "This is a section of the Soyuz that does not return to Earth", NASA explained. "Once the patching is complete, additional leak checks will be performed". Additional updates will be posted on NASA's International Space Station blog as more information becomes available, NASA spokesperson Dan Huot told in an email. On Twitter, it confirmed "all systems are stable" despite the "tiny leak". According to reports from the Russian News Agency, Russian space agency staff members have stated that the incident may have been caused by an impacting micrometeoroid - a tiny piece of rock or other material. Feustel commands the crew.

Astronauts used tape to seal a hole that was punched in the International Space Station while they were sleeping.

Drew Feustel, the current commander, and Ricky Arnold and Serena Auñón-Chancellor, all from the U.S.

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