Because it will make the movie less bad.
Lol what?
Bizarre. You think the script sucked because you weren't told about the name of some nonexistent planet nearby that had nothing to do with the story? You want to know the speed of the ship? Why haha?
Even in a superb script, there is no place for useless details that don't help the story. Do you want to know who painted the ship? What brand of cereal the main character had that morning? Maybe they should break into a song about what temperature the room was cooled to?

Don't discredit yourself by saying stuff like that.