@@TurtleSB If "8 years later" is meant to represent the time forward and back from the sender sending and receiving the message, then it would have still taken roughly 4 years for the message to send. So, it would still be wasting time.
1950: We want faster cars 1970: We want faster rockets 1990: We want faster computers 2010: We want faster internet 2020: We want faster vaccine 2050 (Colonizing Mars): We want faster spaceships 2100 (Colonizing space): We want faster babies 2500: We want faster teleportation *3020: We want faster light.*
Fun fact: There is no “time” for light. Photons that move at speed of light do not age. Universe is 13.7 billion year old, but even for the first photons that appeared in this universe, no time has passed.
@Benny Pepper ALSO, if you think that the universe is small then that's because you live on earth, in earth scale the universe looks so small but in cosmic scale it is so big.
Yeah this video doesn't really show how light is slow. it shows that despite how fast light is, it still takes a long time because of just how big our universe is
Maybe because "Why the speed of light is actually horribly slow" is more unique and attracts more attention compared to "Why our universe is actually horribly huge" because there are so many videos about the size of the universe.
Imagine what it was like just two or three hundred years ago when it took months to send and receive messages between Europe and the New World or Europe and Asia. A really big problem back then was that you didn't know if your message would ever arrive due to problems with the ships. Only thirty or forty years ago telephone communication between the US and Europe was subject to a noticeable lag. You had to be patient to let the other person respond.
Sure, it feels good to know how much we've progressed but this is the universal speed limit which means no matter how much we progress we will never be able to communicate faster than this. That means even after 1000, 10,000 and even 100,000 years you will still be stuck with the same speed cap of communication no matter what.
@@ortherner And he never gets that response, because he died in a car accident five years ago. Yeah... and people wonder why aliens haven't contacted us yet...
shindari it’s not jsut about them contacting us, we have yet to sense any signal from them for example their radio or tv signals that are unintentionally sent out
@@thavambase6907 Those signals travel at the speed of light. So even if the alien civilization capable of producing those noises is only 500 light years away from Earth (a speck of distance, in the big picture) it would take 500 years for those sounds to reach us. Meaning that only signals sent out 500 years ago would just now be reaching us. By then, that civilization, for all we know, could have ceased to exist. It's just too much time. Too much distance. If there is no rate of speed faster than light, then the universe is quite simply too big to be traveled in a timely manner.
@@shindari I know all that...but my point is, earth 500 years ago was not modern, but that doesnt mean another civilization was not...each planet's history is different, many planets could have been way more advanced than we are now 1 million years ago...so my point is, we have never received any such signals from any alien planet which is odd because I do believe aliens exist but I understand the limits of physics in the gigantic universe...
“It wpuld take over 20 minutes to get a response!” *people in the 1800s wainting for a month to get a response to their letter* Edit: I WILL NOT CORRECT THE TYPOS
@@Marnige In that case sure. But it is not like he said that mars will feel isolated and will want to be independent. Also Mars spacecraft would probably be guided from mars rather then earth.
Nice video! One can also add that despite this fact, according to the theory of relativity, the journey of a photon is always instant from its own point of view, no matter how long it actually travels between two locations. And I find it quite funny.
Quantum entanglement is the solution. Whenever we reach that start (if we ever do it), we'll already have far superior quantum computers that'll make us the job, and that thing about waiting for 4,3 years to receive something will only be so whenever we catch something censored from the information flow through the entangled particles.
Us, humans are 1,000,000,000 times closer to the size of the observable universe than to the smallest length possible also known as the Planck length. So that means we’re actually huge but the universe just has a huge broad spectrum of sizes. This would mean that light speed is NOT slow as for it to move across a size that’s on the big side of the size spectrum, it’ll take a very little time as opposed to the size of the whole universe compared to the Planck length. So if there was a scale ranging from the Planck length all the way to the observable universe then the distance that light speed could travel in a certain amount of time such as the age of the universe would mean light speed would be would be BILLIONS AND BILLIONS times closer to the size of the observable universe than the smallest length ever known and considered the smallest length possible. In conclusion, we are huge and light speed compared to the known sizes of the universe, light speed is actually very fast.
Lol, that was on ND Tyson's 'simulation' video the other day... It was a good one. I don't think we live in a simulation, I think physics is tripppppin'! 🎱⚽⚾🏀🏈🏉🏐
“Light gets even slower when we’re further out” No sir you’re wrong. Light does not slow down. The distance increases, but light does not get slower, it stays at exactly the same speed as it always is.
It feels relatively slower, just like you can say a car traveling at 100km/h feels slower when you have a difference of 100 vs 1000 km distance. That is what he meant
@@1manApocalypse_CP that's how we decided big and tiny, long and short, I mean you need to have another thing to compare... So compared to the universe yeah light is horribly slow... And compared to train and planes it's super fast...
We’ll have to create some kind of communication network in the solar system with a new technology like we did with wireless repeaters. Imagine hundreds of little satellites orbiting everywhere in the solar system, and capable of transmitting faster than light. No idea how it would work but I think it would be interesting to study.
Transporting data on a spacecraft that could pass the speed of light will probably be the final and best form of long distance communication. Since nothing can physically go faster than light, I'm just gonna assume that's how it's gonna be. There are possible ways to go faster than light like bending spacetime to basically make us go faster than light without defying the laws of physics. If it's possible, manually transporting it would probably be more feasible than using light to transfer information.
It doesn't matter how many satellites you put in space for a faster communication network, it will be the same. This won't get light to go any faster, nor they can communicate faster than light itself.
@@intasarbatool5522 there has been a few successful experiences of « teleportation ». A Chinese experiment found out that atoms have « twins » that behave the same with huge distance between them. I don’t recall where I read that but it was kind of a big thing when they did it. I guess it takes so much money and time between each try, that’s probably why it has been silent for a while. I agree the speed of light is the physical barrier we can not break. Yet.
@@vab120 you sure you're not thinking of quantum entanglement? I think it's been proven a couple times so far but it still has zero stability, so the connections last nanoseconds.
Hey that's Sirius the star you're pointing out at 5:00 just next to Orion! The actual Alpha centauri solar system (in which proxima centauri is the third star) is far beyond the bottom left corner of the skyview as is the Centaur! Sirius is still pretty close from the earth (8 light-years I remember correctly).
I always thought the speed of light was horribly slow since the day I got thought in school as a kid that light has a speed to begin with. I really thought light was instant until that moment.
I do wish folks would stop going on and on and on and on about the speed of light... It ain't about the speed of light. It's the speed of causality. Light just happens to obey the rule of the speed of causality.
that pretty much means the only ways people can communicate with others on different planets are... 1.) We discover something faster than light and find a way to use it for communication (like sending messages through a wormhole or something like this) 2.) The lifespan of a human needs to drastically rise to above 1000 years (what would not make it really better to communicate, but better possible since time feels shorter at least for communication in our own solar system) 3.) finding a way to move planets so they are close to eachother without the gravity pulling each one together and find a way to keep life possible for humans because that would be pretty hard too. there might be more ways but those seem like the easiest to me... i would like to see what your ideas are! :D
@@JamesTheFoxeArt so by this logic if i go at the speed of light and travel to another galaxy it would seem as though it was instantaneously for me but hundreds of thousands of years for the 3rd person observing
If you think about it, Having light's speed is basically an instant teleportation. On Earth, you could teleport from one part of the planet to another within 1/14th of a second. And even with such ability , it would still take you 4+ years to reach the "nearest" star. Freaking space, It's unimaginably huge.
-Hey, how you doing? -Good, watching teletubbies. You? -Nice, I just went to high school. -That's cool, I'm looking for job. -Did you find a job? -Yeah, I quit, got married, divorced and I'm a single mother now. -Doctors said I have dementia. Who are you? I can't remember. -Hey I respond on behalf of your friend, she died of old age 2 years ago.
Dancingdog Waiting 72 centillion years (I’m pretty sure the universe will end beffore then) just for the person to say I don’t like it do another essay
What if we have "a ring of servers" between the Earth and Mars so that the 22 minutes delay of communication can be cut? Light is travelling by carrying energy (E=mc^2), right? So, if there are millions or billions of servers boosting up as a ring between the Earth and Mars in order for the communication to be shorter, it is possible, right?
Nope. Been explored extensively in recent years and the conclusion always remains the same: no matter the vector, the same amount of energy is required. Even in your theoretical system the servers would each require milliseconds to process and transfer data, and the more servers you add to reduce distance the more processing time is required. To put it simply: imagine having a stick between you and a button on Mars. It would take the stick just as long to move to push the button as it would for light to get there to remotely activate it.
@@unknownlol5084 Sonic at max with no ability he runs at the speed of sound. Chaos emeralds and all that crap he becomes faster than light I think.. I don't know a lot about sonic's super forms
“Light thinks it travels faster than anything but it is wrong. No matter how fast light travels, it finds the darkness has always got there first, and is waiting for it.”
The best way to avoid this issue is to find something faster than light. Entangled particles have been known to instantly flip their counterpart's state when observed, and this is theorized to be not limited by distance. Imagine someone built two computers, each with a chip of entangled particles that the CPU was able to control and interpret. One computer could be sent to another planet on the outskirts of our solar system along with a colony. When the colony landed, they could sent messages to earth via the entangled computers instantaneously regardless of the distance between them.
Such a system would have interesting implications for causality. Time isn't a constant; it's relative to the observer. If you can effectively send information faster than light, then you can also send it back in time.
You would see the typing symbol after 8 years not 4, if your chatting partner is 4 light years away. Because the notification that he is typing takes also 4 years back. So it would be: Sending the message -> seeing the "send" symbol -> 8 years later -> seeing the "read" symbol -> seeing the "typing" symbol -> getting the message instantly after typing disappears.
"You'll have to wait at least 2.6 seconds after sending a message to them before you'd actually get a response" I don't see the problem, this is faster than the amount of time it takes people to message me back here on Earth.
I love how half an hour is presented as a huge amount of time for a sent message to reach its recipient, when even just 100 years it would take weeks or even months to deliver a written letter from North America to Europe.
*There are many Levels of Speed:* 1. Sound Speed 2. Light Speed 3. Closing the Incognito Tab when your Parents walk into your room Speed 4. Ludicrous Speed
The book, “The Martian” actually addresses the communication issue quite well. I would definitely recommend the read just to see how incredibly accurate the book is.
the Martian is my favourite sci-fi book and movie ever. it feels so realistic. i think future mars expeditions are going to be similar to what they show in this title.
@@madeofcastiron Don't forget National Geographic's MARS tv series which concentrates more on the problems between humans ourselves, I enjoyed every minute of it.
Thanks for this, I now feel much better about the fact that my friend who lives at the other end of the Hercules-Corona Borealis Great Wall hasn’t responded to me yet.
@@thomaswolosik6590 it just wouldn’t of existed probably, if you sent someone a message it would take about 8 years get a response from them, by that time you’d probably of forgotten them 😂
Raiyyan Shaikh no it’s just below 45 mins, because light takes 22 mins, 24 seconds to get to mars, and then when the person sends the message back that will take another 22 mins and 24 secs, which is 44 mins and 48 secs...
Yes the universe is huge... That's why the perspective looks so small. But the same point he's either lying to us or he's wrong. Google it you'll find out he is totally wrong
Us, humans are 1,000,000,000 times closer to the size of the observable universe than to the smallest length possible also known as the Planck length. So that means we’re actually huge but the universe just has a huge broad spectrum of sizes. This would mean that light speed is NOT slow as for it to move across a size that’s on the big side of the size spectrum, it’ll take a very little time as opposed to the size of the whole universe compared to the Planck length. In conclusion, we are huge and light speed compared to the known sizes of the universe, light speed is actually very fast.
3:10 There is also this little thing calles a Sun in between so you would need to bounce the signal off of a sattelite and travel an even greater distance (and time).
When you really think about it, this video isn’t about WHY but instead HOW. Just explaining the different time light reaches another planet and object in the universe.
