N Sync star takes space tourist medical tests

N Sync star Lance Bass is undergoing medical tests in Moscow in a bid to become the third space tourist ever.

He is vying with former NASA employee Lori Garver to claim a seat on a Russian spacecraft.

The tests include spending time in a pressurised chamber and a centrifuge test to determine how their bodies will respond to liftoff.

Russia's space agency doubts whether either will be ready in time for October's flight to the International Space Station.

But the agency will hold one seat in the three-person Soyuz spacecraft open just in case.