One fan pointed out the similarities shared between one scene in the recently released Eternals trailer and the vision that Thor (Chris Hemsworth) receives in Avengers: Age of Ultron (2015).
Eternals is yet to be released but already Marvel fans have spotted some intriguing Easter eggs.
Eternals stars Angelina Jolie, Gemma Chan, Kumail Nanjiani, Kit Harrington, Salma Hayek, Brian Tyree Henry and Richard Madden.
The forthcoming superhero film, directed by Oscar-winning Nomadland filmmaker Chloe Zhao, is due for release next month.