Spoilers ahead for Star Wars: The Last Jedi!
The universe of Star Wars is so incredibly detailed that you can't possibly explain it all in one movie. Indeed, you can't possibly take it all in on one viewing, either. Fortunately, Lucasfilm decided to release a companion book to Rian Johnson's The Last Jedi, which is an in-depth Visual Dictionary of the movie's characters, creatures, locales, and technology.
And while the book is officially geared toward kids ages 9-12 and a grade level 4-7, it actually answers a lot of major questions us adults have about the film. For example, we now know the name of that orphan boy with the broom and a partial insight into the real identity of Snoke.
In that vein, here are eight other interesting factoids we found from the Dictionary that helped shed a little light on the mysteries of The Last Jedi.
- How the First Order was able to track the Resistance through hyperspace:
This was subtly teased in Rogue One, but how does the tracker actually work? According to the book, the device is powered by "a complex static hyperspace field generator. This envelops arrays of databanks and compiters in a localized hyperspace field that accelerates their calculation speeds to unimaginable forces."
- The origins of Snoke's Praetorian guards:
What makes these characters notable is the epic fight scene they have with Rey and Kylo Ren after Show Spoiler the death of Snoke . But where did these red bodyguards come from? The name "Praetorian," says the Dictionary, can be traced back to the 14th Atrisian Emperor of Kitel Phard; this dynasty remained in power by wiping out all of its opponents. The fighting style of the Praetorian is a mix of disciplines from across the Star Wars universe, including Teräs Käsi, Bakuuni Hand, Echani unarmed forces, and Nar Kanji "Blind Alley" techniques.
- Where Rose Tico got her cool ring:
Rose first shows her piece of bling to the Fathier stable boy on Canto Bight to show him that she and Finn are with the Resistance. By flickig a certain dial, it reveals the crest of the Rebel Alliance from the original trilogy. Not a coincidence because the ring is actually an "antique" from the original rebellion against the Empire. These kinds of rings were used by members of the Imperial Senate to show their clandestine support for the rebels working tirelessly against Darth Vader and Emperor Palpatine. The ring ends up in the possession of the aforementioned stable boy as we see it on his finger at the end of The Last Jedi.
- Why Vice Admiral Holdo's hair is purple:
Ok, maybe not a huge mystery, but there's also the question of why she wears a dress instead of a Resistance uniform. The answer is that both Holdo's hair color and attire are signs of admiration for her home planet of the independently-spirited Gatalenta. This world is well-known for its poetry and compassionate denizens.
- Those strange, milk-spraying creatures on Ahch-To:
The world of Star Wars is known for its multi-colored milks. You've got the blue-colored Bantha milk and now the green-colored Thala-Siren milk. Similar to sun-bathing walruses (only much uglier), Thala-Sirens are the marine mammals that give Luke the nutrient-filled liquid we see him harvesting in The Last Jedi. Since they are not hunted, they don't fear anyone approaching them and are quite docile.
- Who are the caretakers of the ancient Jedi temples:
You know who we're talking about. The amphibious-looking caretakers of Atch-To who look like they escaped a nunnery on Fraggle Rock and get pissed at Rey for causing damage to the old structures. The name of their species is the Lanais and they're actually distant relatives of the Porg with "an uncanny ability to read the intentions of newcomers to the island." We get a good look at the females in the movie because the men spend most of their time at sea, visting the island only once a month to deliver fish. As an intrinsically musical species, "the tools of their daily tasks often become impromptu percussion instruments."
- Luke’s compass once belonged to Emperor Palpatine:
After the destruction of the second Death Star, Luke Skywalker set upon a path to restore the Jedi Order. Before he could do that, however, he needed to learn everything he could about them. This was an immense task because the Empire tried its hardest to wipe out everything to do with the Jedi. Nevertheless, that didn't stop Palpatine from hoarding a few keepsakes from that bygone era. One such tchotchke was a compass, which Luke found at the Emperor's observatories on Pillio, an uncolonized acquatic planet with more than three million species inhabiting it. The recovered Jedi compass contains a "supraluminite lodestone attuned to hyperspace vectors."
- The meaning behind DJ's name:
DJ may not be the suave Master Codebreaker reccomended by Maz Kanata, but he's the best the Resistance can find on short notice. His name actually comes from a piece of his attire, a tin plate affixed to his hat. At first glance, it looks like a total alien language, but upon further inspection (thanks to The Visual Dictionary), you can see it says "Don't Join." This is an overt reference to the fact that his character doesn't believe in joining causes, allying himself with whoever pays him the most. To him, war is just another business venture in which you can get rich off of both sides. In his own words, “They blow you up today, you blow them up tomorrow."