A FAN of Professor Stephen Hawking is attempting to prove time travel by sending out invitations for a party held four years ago.
His theory is that anyone who turns up to the party, which no one attended, must have read about it in the future.
Prof Hawking staged the event for time travellers on June 28, 2009.
His theory was that anyone who turned up must have read about the party in the future – although no one attended the do.
Poster designer Peter Dean (39) is now printing invitations to the historic party in the hope they will attract future generations of time travellers.
They have been endorsed by Prof Hawking, who said: "I'm hoping copies of it in one form or another will survive for many thousands of years.
"Maybe one day someone living in the future will find the information and use a wormhole time machine to come back to my party, proving that time travel will, one day, be possible."
Londoner Mr Dean, who met the 'A Brief History of Time' author last week, said: "The whole experiment depends on future time travellers seeing this poster.
"I saw an article a number of years ago where he explained how to build a time machine and since then I have always been interested in his work."
Mr Dean has made 100 copies of the limited-edition posters. (© Daily Telegraph, London)