Partial blame is on the Europeans. That’s what they called them for a couple hundred years before America existed, but for some reason we still haven’t changed the terminology across the board.

“Approximate chemical formula”

Far far away years. 3 years BBY passed between marriage and death. In earth years, due to George Lucas’s extremely powerful mind and ability for endless creativity it was… Also 3 years.

Less than a year? I think it was like 3 years later.

He’s a little confused, but he’s got the spirit.

What is pictured is a CT machine, not an MRI.

In the MCU? He hand built multiple suits, and designed all of the others himself. It even states that he designed his first engine when he was like 4 I think in the first movie. He was worse at creating AI than his actual mechanical and electrical engineering skills, as portrayed in the films. Comics are of course a separate matter.