If the SpaceX rocket was to abort its takeoff tonight it could land just off the west coast of Ireland.
The historic rocket is set to launch from Cape Canaveral at 9:30pm Irish time and should be visible in the south-west at around 9:45pm.
However, should the unthinkable happen, a spot off the west coast of Ireland will be one of the last abort landing locations.
NASA state: "Once liftoff occurs, the abort landing locations change with every passing second of flight, ultimately resulting in Crew Dragon requiring a potential landing off the western coast of Ireland."
In total there are 50 abort landing locations in the Atlantic Ocean which span from just off the coast of Nova Scotia to about 40km west of Skellig Michael.
Abort stage 2d would see the crew of two astronauts, Bob Behnken and Doug Hurley, land in this spot and would mean the take off was aborted eight minutes and 38 seconds into flight.
SpaceX have an entire fleet of rescue vessels across the Atlantic as to rescue the astronauts and gear should something go wrong.
All going well however this won't be necessary and at this stage the rocket will enter space.
The clear weather means Irish people should be able to see the NASA Space X rocket soaring across the skies tonight.
The historic mission is set to pass over Ireland between 9:40pm and 10pm tonight.
Luckily clear skies are forecast across the entire country today and tomorrow so tonight's viewing shouldn't be impeded.
However it will depend on weather across the Atlantic, after concerns yesterday that the mission could be cancelled due to unfavourable conditions.
If all goes to plan, the Falcon 9 rocket will take off from launchpad 39A at the Kennedy Space Centre in Florida and journey to the International Space Centre.
The mission is being touted as Elon Musk's biggest project yet, as the Space X founder looks to make history with its first-ever human flight.
