Continuity mistake: Ling walks outside the cafe after Bu puts the note on the window. When the scene is shown from Cheng's POV, she stands still after walking outside, then walks a few steps to take the note off the window. When the scene is shown again from her POV, she is a lot further away from the window than earlier and has to walk a larger distance to reach the window. (01:54:20 - 02:03:05)
Continuity mistake: When Will comes out of the garage to get Teresa, he has an alien's tentacle attached to him. When he and Teresa go in to the garage, he no longer has the tentacle attached. (00:34:25)
Continuity mistake: At the diner, Zach moved his drink from the tray and set it on the table to the right of his plate and right arm. When his dad sat at the table, Zach's drink was to the left of his plate and left arm. Also, Zach was playing with a plastic fork with both hands and was turned to his right while talking to his dad, but his drink was suddenly between his arms after a camera shift. (00:19:17 - 00:20:15)
Continuity mistake: When Toby puts two drinking glasses from the workmen in the trash can it is not lined, but when Delores opens the trash can it is lined with a paper bag.
Continuity mistake: At the end of the movie Armstrong is standing on the surface of the moon and turning towards Earth. At that point the sun is exactly behind him, so Earth should be fully lit. In the next scene Earth (and the moon) are lit from the left, not directly in front as they should be. (02:05:20)
Continuity mistake: Valeria went to the first meeting with Alberto Rak at his place. In the following scene her mother Amalia enters her apartment bringing breakfast. Between takes Laura Morante picked up the tray from opposite directions, since the coffee cup switched from left to right during her walk from one end of the corridor to the other. (00:10:50)