Tonight's Sky
Sun
Sun
Moon
Moon
Mercury
Mercury
Venus
Venus
Mars
Mars
Jupiter
Jupiter
Saturn
Saturn

Tonight's Sky — Change location

OR

Searching...

Tonight's Sky — Select location

Tonight's Sky — Enter coordinates

° '
° '

Space station astronauts complete nearly eight-hour spacewalk to investigate mystery hole

Determining the cause of a small breach in the Soyuz spacecraft docked to the International Space Station has been harder than anticipated.
SpaceWalk
Russian cosmonauts Oleg Kononenko and Sergey Prokopyev conduct a six-hour spacewalk to investigate the cause of a hole on the Soyuz spacecraft.
NASA
On Tuesday, two Russian cosmonauts spent seven hours and 45 minutes on a spacewalk, working to solve the mystery of who or what poked a hole in the Soyuz spacecraft. The cosmonauts used knives and other tools to cut a 10-inch chunk out of the International Space Station. It will be brought back to Earth and investigated for clues to the cause of a small hole in the Soyuz capsule.

Back in August, astronauts noticed a slight drop in pressure on the International Space Station. While not an immediate risk, they investigated and found a hole on the inside of the Soyuz habitation module, which is currently docked at the space station. Astronauts Sergey Prokopyev and Alexander Gerst repaired the 0.07-inch-wide (2 millimeters) hole with material soaked in an epoxy sealant. Pressure quickly returned to normal aboard the space station, and the patch job has held since then.

But as they’ve investigated the hole in the Soyuz capsule, astronauts can’t figure out what created it. At first, it was thought that a micrometeorite may have collided with the craft. But Russian officials stated a few days after the hole was discovered that, based on its shape, it looked to have been drilled. This led to speculation that perhaps someone purposefully created the hole, sparking rumors of sabotage.

“It was done by a human hand. There are traces of a drill sliding along the surface. We don’t reject any theories,” Dmitry Rogozin, the head of Russian space agency Roscosmos, told the state news agency TASS.


NASA

Exploring the Hull

Beginning at about 11 a.m. EST, cosmonauts Oleg Kononenko and Sergey Prokopyev started what was supposed to be a six-hour-long spacewalk to examine the external hull of the Soyuz MS-09 spacecraft, which is used to transport astronauts to and from Earth. It was the eighth spacewalk this year. 

Their goal was to collect samples of any residue found on the habitation module’s hull. To do so, they had to cut a 10-inch (25 centimeters) sample of the the thermal insulation and debris shield on the hull. They also collected images and video to aid the investigation. Then the cosmonauts had to place a new thermal blanket over the hole to ensure it is fully sealed. The task wasn't easy.  

The samples, data and photographs taken from the leak site will be brought back to Earth and analyzed by Russian specialists. They hope that the evidence collected during this spacewalk will finally solve the mystery of what created the hole.

The crew aboard the space station has, since the leak was discovered and repaired, conducted frequent leak detection work and pressure measurements to make sure that the leak stayed sealed and the pressure on the space station remained normal. So far, the capsule has remained secure and pressure on board the space station has maintained.

The Soyuz spacecraft will be used to return astronauts Sergey Prokopyev, Alexander Gerst, and Serena Auñón-Chancellor to Earth in eight days.
0

JOIN THE DISCUSSION

Read and share your comments on this article
Comment on this article
Want to leave a comment?
Only registered members of Astronomy.com are allowed to comment on this article. Registration is FREE and only takes a couple minutes.

Login or Register now.
0 comments
ADVERTISEMENT

FREE EMAIL NEWSLETTER

Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. View our Privacy Policy.

ADVERTISEMENT
ADVERTISEMENT
asy_gravitational_eguide

Click here to download a FREE gravitational waves PDF curated by Astronomy magazine.

Find us on Facebook