Recent questions in Speed of Light

+2 votes

0 answers

If I have a solid rod of 1 light year length and I try to press a button using that rod which is also one light year away, will the rod be able to transfer energy faster than the speed of light?

asked Apr 15, 2023 in Speed of Light by TeesdaleSpark

+8 votes

0 answers

How close are humans to discovering how to create wormholes and use them for faster-than-light Interstellar travel?

asked Apr 15, 2023 in Speed of Light by QuasarWhisper

+24 votes

0 answers

Why doesn't the universe allow anything with mass move at the speed of light?

asked Apr 14, 2023 in Speed of Light by intothevoid

+24 votes

0 answers

What is NASA's stance on faster-than-light travel?

asked Apr 14, 2023 in Speed of Light by iamrinswind

+27 votes

0 answers

Why don't we use petametres instead of light years or parsecs?

asked Apr 14, 2023 in Speed of Light by madhatter1uk

+20 votes

0 answers

Is traveling at near-light speed possible with current technology? If not, what would need to change about physics before such travel was possible?

asked Apr 14, 2023 in Speed of Light by Synthesiser

+71 votes

0 answers

If speed is relative, then what is the speed of light relative to?

asked Apr 14, 2023 in Speed of Light by CelestialPulse

+23 votes

0 answers

What is the speed of light in Planck lengths?

asked Apr 13, 2023 in Speed of Light by SeraphicHarmony

+1.3k votes

0 answers

What happens to the direction of light in which it travels during reflection?

asked Apr 13, 2023 in Speed of Light by SeraphicOracle

+21 votes

0 answers

Is the speed of light same in air or vacuum?

asked Apr 13, 2023 in Speed of Light by lemonade

+5 votes

0 answers

If you accelerate a tube to 1/10th the speed of light, then fire a photon from the back to the front end of the tube, the photon would travel at the speed of light through the tube. Would it not be traveling through space at 110% the speed of light?

asked Apr 13, 2023 in Speed of Light by solvegunnage

+20 votes

0 answers

Can beta particles travel faster than light?

asked Apr 12, 2023 in Speed of Light by DaveS1984

+22 votes

0 answers

Is there anything faster than light speed? Will we ever achieve it in our lifetimes?

asked Apr 12, 2023 in Speed of Light by Bodgeit and scarper

+24 votes

0 answers

Is there any evidence for faster than light travel occurring within our universe or any proof that it’s even possible?

asked Apr 12, 2023 in Speed of Light by LunarMystic

+18 votes

0 answers

How do we know that matter is moving slower than light? Have we ever reached such speeds before (except maybe particles)?

asked Apr 12, 2023 in Speed of Light by Mr Perfect

+1.0k votes

0 answers

How do we know that humans can't go faster than light on Earth?

asked Apr 12, 2023 in Speed of Light by ian.foxall

+7 votes

0 answers

How many images can a single ray of light make? Can't I make one ray into 2?

asked Apr 12, 2023 in Speed of Light by ultimatehandyman

+236 votes

0 answers

Why do photons move at all? In other words, why do photons move away from their source?

asked Apr 12, 2023 in Speed of Light by pet1

+292 votes

0 answers

How can you tell if something is moving faster than the speed of sound?

asked Apr 11, 2023 in Speed of Light by JoeHoudini

+24 votes

0 answers

How far away are the nearest stars to Earth? How do we know how far they are in light years?

asked Apr 11, 2023 in Speed of Light by Josh.91

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Recent questions in Speed of Light

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