Recent questions in Speed of Light

+3 votes

0 answers

How did the universe experience time when all particles were moving nearly as fast as the speed of light? Were the first 300,000 years of the universe longer than 300,000 years now?

asked Mar 19, 2023 in Speed of Light by geewar

+78 votes

0 answers

What is the evidence for why the speed of light is accepted as a universal constant, and what are the implications for physics if it is compared with other constants like Planck's constant?

asked Mar 19, 2023 in Speed of Light by Florent

+24 votes

0 answers

If we had 2 entangled particles and change some properties of one of them, would the other particle change immediately? If answer is yes, then wouldn't it be against Einstein's special relativity (transmission of information over speed of light)?

asked Mar 19, 2023 in Speed of Light by 234george234george

+230 votes

0 answers

If two people are in a spaceship moving at the speed of light, why would one person see other galaxies rushing towards them while the other person sees nothing coming towards them?

asked Mar 18, 2023 in Speed of Light by godeland

+239 votes

0 answers

How do you find the final speed after two objects collide if they were moving at different speeds before the collision?

asked Mar 18, 2023 in Speed of Light by QuantumNova

+26 votes

0 answers

If I could travel at the speed of light around the Earth, where would I see myself before I left?

asked Mar 18, 2023 in Speed of Light by LuminousSculptor (1.7k points)

+17 votes

0 answers

Why is not having faster-than-light travel a problem? Why does it matter? Who cares?

asked Mar 18, 2023 in Speed of Light by diligencecongress

+12 votes

0 answers

If we discover a way of traveling through space faster than light speed in the future, what are some realistic possibilities for what may come from this discovery?

asked Mar 18, 2023 in Speed of Light by Sandra1/

+3 votes

0 answers

What does it mean when we say something is "a million light years away"?

asked Mar 17, 2023 in Speed of Light by mappman

+3 votes

0 answers

Whats the fastest speed a human body can withstand in space? How long would it take to travel a light year at that speed?

asked Mar 17, 2023 in Speed of Light by was dunc before

+22 votes

0 answers

What would happen if we traveled at the speed of light for millions of years?

asked Mar 17, 2023 in Speed of Light by Lisa Yeates

+7 votes

0 answers

How long does it take light to travel from one end of our solar system to another?

asked Mar 17, 2023 in Speed of Light by greenback78

+291 votes

0 answers

When light emerges from glass, what makes it resume its previous speed?

asked Mar 17, 2023 in Speed of Light by Pink Panther

+6 votes

0 answers

Can you go back in time? Can the speed of light be exceeded?

asked Mar 17, 2023 in Speed of Light by SolarisOracle

+23 votes

0 answers

Taking a frame attached to earth as inertial, which of the following objects cannot have inertial frames attached to the, and which are inertial reference frame? (A) a car moving at constant velocity (b) a car that is accelerating (c)

asked Mar 16, 2023 in Speed of Light by CelestialCharm

+10 votes

0 answers

What would make a light turn on by itself?

asked Mar 16, 2023 in Speed of Light by Jack

+299 votes

0 answers

Why do galaxies farther away from Earth move away from Earth faster?

asked Mar 16, 2023 in Speed of Light by kimble

+6 votes

0 answers

Is it possible to go faster than the speed of sound in air? If so, what would be required to do that?

asked Mar 16, 2023 in Speed of Light by Bodgeit and scarper

+14 votes

0 answers

How can sound and light travel through the same medium (air) but have different speeds of propagation?

asked Mar 16, 2023 in Speed of Light by CGN

+6 votes

0 answers

Is it probable that, if faster than light speed was possible, black holes would have never formed in the first place?

asked Mar 16, 2023 in Speed of Light by iceml

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Recent questions in Speed of Light

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