Warning! SPOILERS for Obi-Wan Kenobi episode 5.
Episode 5 of the Obi-Wan Kenobi series explains a moment in Return of the Jedi through the use of a thermal detonator. Thermal detonators debuted in Return of the Jedi’s first act, as used by a disguised Princess Leia to threaten Jabba the Hutt while alarming nearly everyone in his throne room. While thermal detonators are used throughout both Star Wars continuities, this was their only live-action appearance until the Obi-Wan Kenobi series demonstrated their destructive power during a battle.
Just as the Star Wars franchise’s blasters are far more powerful and versatile than real-world firearms, thermal detonators are extremely deadly incendiary explosives. Thermal detonators used the fictional and highly-unstable chemical known as baradium, which can easily disintegrate materials and beings in massive explosions whose magnitude is even greater than blasters set to full power. Thermal detonators are commonly used by soldiers and bounty hunters most frequently as grenades — and occasionally as time bombs — with their small, concealable size making them even more dangerous.
Related: Star Wars: Why Blasters Are Only Set to Stun Once for Leia in A New Hope
With this in mind, it’s no surprise that Leia (disguised as the bounty hunter Boushh) made an entire room full of the galaxy’s toughest criminals recoil in horror at the mere sight of a thermal detonator, which she ultimately deactivated when Jabba the Hutt accepted her price for the “captured” Chewbacca. In the Obi-Wan Kenobi episode “Part V,” a dying Tala Durith halts the advance of Imperial stormtroopers and purge troopers by activating a thermal detonator, instantly disintegrating herself and stopping the troopers dead
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