What makes a good meal for astronauts to eat in space?
2 May 2014 Last updated at 09:14 BST
The UK Space Agency has launched a competition for children to design a space meal.
The winning designer will work will celebrity chef Heston Blumenthal to make their meal for British astronaut Major Tim Peake.
Ayshah's been speaking to Libby Jackson from the agency about the sort of things they eat at the moment and get some tips about the sort of thing they are looking for.
Pictures from the CSA