Astronauts on the International Space Station are having to deal with an air leak.
The leak is coming from a small hole in a capsule that was used to deliver a new crew.
It is thought the damage was caused by a high-speed rocky fragment flying through space.
Mission controllers in Houston, Texas, and Russia’s capital, Moscow, say the six-strong crew are in no danger.
The astronauts were asleep at the time when the impact happened. When they rose for their day’s work on Wednesday they were instructed to search for the leak.
An immediate fix was implemented using a sealant and tape to cover the hole, which is said to measure a couple of millimetres in diameter.
The astronauts are now working with engineers on the ground to assess whether a more robust repair is needed.