On Thursday 18 February 2016, at the Colosseum theater in Turin, I participated in one of the meetings of the "Thursdays of Science" which dealt with the theme: "On the wave of gravitational waves - From Einstein's prediction to the birth of a new astronomy". A friend (physics teacher) invited me to follow that appointment. Today I can say that it was really worth it. The confirmation of the existence of gravitational waves and their detection was admirably illustrated by two well-known Italian physicists: Vincenzo Barone and Andrea Chincarini. I was so impressed and fascinated by the subject that I had a first "input": I would have written an engaging story capable of making that discovery known even to people with cultural interests far from such things. It will seem incredible but my idea was completely realized in June of that same year. Always my friend physics teacher, aware of how fascinated I was by the topic "discovery of gravitational waves", informed me of an upcoming appointment not to be missed: Kip Thorne would give a lectio magistralis in the main hall of the Cavallerizza Reale of the 'University of Turin. The great American theoretical physicist, friend of the late and brilliant Stephen Hawking, was the author and curator of the scientific part of the film "Interstellar" (directed by Christopher Nolan), therefore the subject of the Turin lectio had "The science of Interstellar" as its subject. The fact is that after that meeting I would no longer have any doubts about the plot in which I would have moved the protagonists of "Escape from the relative present" which, after a couple of revisions, I completed in February 2019.