https://www.unexplained-mysteries.com/news/367664/whistleblower-crashed-ufo-distorted-space-and-time
Of course this concept has been around in science fiction for quite a while. The TARDIS is a fine example.
https://thedoctorwhosite.co.uk/tardis/exterior/
https://tardis.fandom.com/wiki/The_Doctor's_TARDIS , https://www.youtube.com/watch?v=5ga6CwyKvr8
https://thedoctorwhosite.co.uk/tardis/interior/
"While the exterior is of limited size, the TARDIS is famously "bigger on the inside". Behind the police box doors lies a large control room, at the centre of which is a hexagonal console for operating the TARDIS. In the middle of the console is a moving tubular device called a time rotor. The presence of a physically larger space contained within the police box is explained as "dimensionally transcendental", with the interior being a whole separate dimension containing an infinite number of rooms, corridors and storage spaces, all of which can change their appearance and configuration." https://en.wikipedia.org/wiki/TARDIS#Description
https://thedoctorwhosite.co.uk/tardis/rooms
https://thedoctorwhosite.co.uk
