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ZFR Horizon Accelerator Engine
From Warhammer 40k - Lexicanum
The ZFR Horizon Accelerator Engine was a revolutionary Tau invention created after the First Sphere of Expansion. Originating from the Sept of Fal'shia, it was a starship engine which allowed the Tau to finally achieve near-lightspeed travel. This let the Tau spread the empire to extents previously thought impossible, culminating in the Second Sphere of Expansion.[1]
Sources
- 1: Codex: Tau Empire (6th Edition), pg. 19