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01
Firefly in Space
Astronaut Steven Ray Swanson, a huge fan of the show, brought DVD copies of Firefly and Serenity to the International Space Station in 2007, making them a permanent part of the station's library.
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02
Oh Summer!
Whenever a cast member flubbed their lines, they'd yell Summer Glau's name as an inside joke after Glau forgot her lines in the episode "Objects In Space."
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03
Costume Recycling
The Alliance officers' and soldiers' uniforms were repurposed from the 1997 film Starship Troopers and were used again in the sequel.
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04
The Anglo-Sino Alliance
The full name of "The Alliance" was "The Anglo-Sino Alliance", symbolizing the merger of the American and Chinese governments and corporate superpowers, with a flag blending the American and Chinese national flags.
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05
Fox's Episode Shuffle
Fox aired "The Train Job" as Firefly's first episode instead of the two-hour pilot due to its action-packed content. The network continued to air episodes out of order, leaving the pilot for the finale.
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06
Zac Efron's Debut
A 13-year-old Zac Efron played Young Simon in a flashback in the episode "Safe," marking his acting debut.
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07
Alien Connection
In the pilot episode's Battle of Serenity Valley, Captain Malcolm Reynolds uses a cannon featuring a Weyland-Yutani logo from the Alien film franchise (Whedon wrote Alien: Resurrection in 1997).
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08
Han Solo Tribute
Nathan Fillion, a Han Solo fan, had a 12-inch replica of Han Solo in Carbonite made by the prop department, which can be spotted in various scenes.
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09
Expanding the Crew
Whedon initially envisioned a crew of five for Serenity but expanded the cast to nine during development and casting.
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10
Star Wars Influence
Whedon drew inspiration from Star Wars, with Captain Malcolm Reynolds resembling Han Solo and Serenity influenced by the Millennium Falcon. Some Star Wars spacecrafts even make cameo appearances in the show.