Tipler cylinder, a hypothetical object theorized to allow time travel
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Frank J. Tipler (born 1947), a mathematical physicist and cosmologist
Kris Straub's Starslip comic includes a Tipler cylinder created as a work of art (comic 569).
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John DeChancie's Starrigger series uses vertically-aligned Tipler cylinders (officially called Kerr-Tipler objects) to create spacetime gateways along an intergalactic highway.