It launched on YouTube under a one-year agreement with Bowie's publisher and racked up close to 24 million views. It was removed in May this year after the deal expired.

Now, following months of talks, a new two-year agreement is in place enabling the track and video to be re-released. And Hadfield doesn't blame anyone for the situation.

He says on his blog: "David Bowie and his publisher had been very gracious - they had allowed his work, his intellectual property, to be made freely available to everyone for a year and had worked with us and the Canadian Space Agency to make it happen.

"There was no rancour and we removed it from YouTube to honour the agreement. This sequence wasn't anyone's fault. The day we took the video down, we started to work again to get permission to get it re-posted. But the legal process is careful and exacting and takes time."