Astronaut Tim Peake is reading a CBeebies bedtime story from space.
Major Tim is currently living on board the International Space Station 200 miles above the Earth.
He's taken time out to read a story called Goodnight Spaceman by kids' author Michelle Robinson.
The story was inspired by Tim and his two sons, and tells the story of two boys getting ready for bed.
Watch a clip of Tim here.
The full version is available on BBC iPlayer and will be shown on TV on Monday 30 May.