"Harry heard about the voyage a while ago but something triggered his interest in the past few weeks," a source said.
"He's got no idea if it's realistic with it being so close ? with his obligations to the band ? but he's willing to move things around to make it happen," the source added.
The star is believed to have called on close friend and manager Simon Cowell to help him seal the deal.
"If anyone has the contacts to make it happen it's Simon. Harry is happy to fork out the cash for it, he's loaded. He just needs Simon to help him seal the deal," the source said.
The other members of the band Niall Horan, Zayn Malik Liam Payne and Louis Tomlinson are reportedly not that keen to splurge so much for the space voyage.