We're just hours away from the launch of the SpaceX Falcon 9 rocket - which could be visible from Glasgow.
Astronauts Robert Behnken and Douglas Hurley will be blasting off to the International Space Station on board the Crew Dragon spacecraft.
The journey will mark the first crewed spaceflight from the US since the retirement of the Space Shuttle programme in 2011 and the first time a private company has attempted to send astronauts into space.
MeteorWatch has said that the craft will pass over the UK from a westerly direction and will head east.
It could be visible lower in the southern part of the sky as it fies.
The craft will lift off from the Kennedy Space Centre in Florida at around 4.33pm EDT - around 9.33pm in the UK - and it could be visible in the right weather conditions around 15-20 minutes later.
Unfortunately, Glasgow is in for a cloudy evening after a relatively bright day.
We're still crossing our fingers for some kind of visibility but, failing that, you can always watch the launch online on live NASA TV which is available on YouTub e.
