Astronauts launched a competition today that will see the winner blasted into space next year.
One lucky Briton will join 21 others from around the world on a trip to space.
Budding space travellers can create an astronaut profile on LynxApollo.com explaining why they should be picked.
Top-voted candidates will qualify for the Lynx Space Academy challenge weekend, held this summer, where they will face physical and mental Nasa-style tests.
As Aslef's annual assembly of delegates begins in Edinburgh tomorrow the general secretary explains the challenges his members - and workers across the country - face