Organisers of Prof Stephen Hawking's memorial service have seemingly left the door open for time travellers to attend. From a report: Those wishing to honour the theoretical physicist, who died in March aged 76, can apply via a public ballot. Applicants need to give their birth date - which can be any day up to 31 December 2038. Prof Hawking's foundation said the possibility of time travel had not been disproven and could not be excluded. It was London travel blogger IanVisits who noticed that those born from 2019 to 2038 were theoretically permitted to attend the service at Westminster Abbey. He said: "Professor Hawking once threw a party for time travellers, to see if any would turn up if he posted the invite after the party. None did, but it seems perfect that the memorial website allows people born in the future to attend the service. Look out for time travellers at the Abbey."