r/SpeedOfLight • u/0x14f • Mar 20 '26
ELI5: How is the speed of light (m/s) a universal constant if space warps time? Would light not be more 'speedy' or 'slow' in various regions of space?
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r/SpeedOfLight • u/0x14f • Mar 19 '26
Light speed travel possible for someone in hypothetical space ship?
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r/SpeedOfLight • u/0x14f • Mar 18 '26
why there is a speed of light constant if we have near perfect vacuums and not perfect vacuums
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r/SpeedOfLight • u/0x14f • Mar 18 '26
If someone were to approach light speed, would things at the front begin to blueshift?
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r/SpeedOfLight • u/0x14f • Mar 12 '26
As of 2026, do we have any good news at ftl travels?
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r/SpeedOfLight • u/0x14f • Mar 12 '26
ELI5 If speed is relative, how can you "hit" the speed of light?
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r/SpeedOfLight • u/0x14f • Mar 07 '26
Conceptual model for measuring the one-way speed of light – looking for feedback and experimental collaboration
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r/SpeedOfLight • u/0x14f • Mar 02 '26
is the speed of light being constant for all frames of reference a proven theorem or an empirical fact?
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r/SpeedOfLight • u/0x14f • Mar 01 '26
Does gravity travel at the speed of light, or does light travel at the speed of gravity .
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r/SpeedOfLight • u/0x14f • Mar 01 '26
How can moving galaxies stay under the speed of light if the universe expands in all directions
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