What’s It Like to Travel Near the Speed of Light? Part 3: The Limited View

The supermassive black hole in M87, imaged by the Event Horizon Telescope. Its event horizon is the classic one-way boundary in spacetime. Credit: EHT Collaboration (CC BY 4.0).

Constant acceleration builds a horizon out of nothing but motion, walling off part of the universe forever. Meet Wolfgang Rindler, the coffee date you’ll never reach, and the light that can chase you for infinite time without ever catching up.

Universe Today
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