In the book Journey to Star Wars: The Last Jedi: The Legends of Luke Skywalker, which is part of the official Star Wars canon, one of the short stories takes place a year after Return of the Jedi on Jakku, Rey’s old stomping grounds.
However, thanks to The Force Awakens and The Last Jedi, flashbacks are now fair game in the Star Wars movies, and this scene sounds like something that’s already been depicted elsewhere.
That’s right, it’s heavily implied that the abandoned Star Destroyer we saw in The Force Awakens that Rey frequently scavenged was brought down by Luke nearly three decades earlier.
Now at first you might think that this is Force Ghost Luke showing off how ridiculously powerful he is from beyond the grave.