Scientists pushed photons across the universe to test the speed of light—and found Einstein’s cosmic speed limit still holds ...
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The universe’s speed limit exposed and why even light is trapped
The universe comes with a built‑in speed cap, a hard limit that shapes everything from how stars shine to how cause and ...
Physicists from Trinity College Dublin believe new insights into the behavior of light may offer a new means of solving one of science's oldest challenges—how to turn heat into useful energy. Their ...
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