The first inflatable space home has been attached to the International Space Station.
The Bigelow Expandable Activity Module, or Beam for short, began connecting to the station's Tranquillity module at 10.30am (UK time) on Saturday.
It took about four hours for Nasa astronauts to complete the installation.
It looks like a giant pillow and it will be large enough to hold a car when it's fully inflated at the end of May.
Astronauts will test the module for two years to see how it holds up in space.
It's hoped the technology could be used to build homes on Mars in the future.
It has been designed by Nasa and Bigelow Aerospace.