Bad weather forced Space X to call off the launch of two NASA astronauts to the International Space Station.
They were set to take-off from Florida at half nine Irish time last night, but the team decided to postpone the mission 17 minutes before launch.
Astronomer Dr David Whitehouse says he's not surprised.
"To be frank they were pushing their luck.
"The weather has been bad at the Cape, and they had a very small chance of getting this thing in the air.
"And I think everyone know, with scenes like that of the clouds."
