A group of budding young scientists from Rhondda Cynon Taf will see their experiments launched into space later this year, after winning a national competition.
They came up with the idea of taking small water fleas up to the International Space Station, to see how they reproduced there. Hannah Thomas went to meet them.
Wales... from space
Astronaut Chris Hadfield, who is part of the current crew on the International Space station, has tweeted another photo of Wales from orbit.
Click here to see more pictures of Wales from space