1. Darth Vader is barely in Episode IV: A New Hope.

Even though his presence is felt throughout the film, Darth Vader is only present for about 12 minutes of screen time.

2. “I have a bad feeling about this” is a running gag.

This phrase or “I have a very bad feeling about this” is said in every Star Wars movie. See it here.

3. Yoda doesn’t have a species.

The species of Yoda is a mystery; it has never been named. “Yoda’s great,” sophomore Bailey Hill said. “Maybe he scientifically was the only one. Maybe he was the only one that lived.”

4. No female fighter pilots appear in the series.

They occurred in the original screenplay but were deleted in the final cut.

5. The Ewoks speak Tibetan.

The language of the Ewoks was created by combining Tibetan and Nepalese, a language from Nepal.

6. TIE Fighter engine noises were created from elephants.

The engine sounds were created from an elephant bellow and a car driving on wet cement.

7. Obi-Wan doesn’t like the films.

The actor who plays Obi-Wan, Alec Guinness, originally referred to the films as “fairy-tale rubbish.”

8. Luke Skywalker’s original name wasn’t Luke Skywalker.

Originally Luke Skywalker was going to be named “Luke Starkiller.” He even retained the name until right before the filming, when it was changed.

9. Yoda was originally going to be a monkey.

Lucas originally was going to have Yoda played by a monkey carrying a cane and wearing a mask.

10. The troopers don’t exist. 

No physical clone troopers were created for the films. All of the clone troopers seen in the films were made with CGI.

More facts about the Star Wars movies can be found at http://mashable.com/2014/04/17/star-wars-facts/#pKGKiC8ZukqQ.