Two astronauts are set to launch into space from US soil tonight, the first time since 2011.
SpaceX’s Demo-2 mission will attempt to launch its first crewed mission for NASA later today (Saturday May 30), after bad weather cancelled its first liftoff attempt earlier this week.
Robert Behnken and Douglas Hurley will travel to the International Space Station (ISS) at 8.22pm UK time.
For skywatchers in the UK, the Saturday flight is less favourable for catching sight of the capsule coming overhead.
The first pass following lift-off comes when conditions are too light (just after 20:40 BST). The second pass, at around 22:15 BST, is better, but the vehicle will be very low on the horizon in the southwest.