Did your ever watched Movies such as Tenet, Inception, Interstellar, Harry Potter, Mr.Pebody & Shermon. If you watched one of these movies or not, I guess you have an idea about what kind of a thing time travel is.
Fist of all I ask u a question. Do You believe time travel or Do You thing can it be practically happen?
Whatever your answer is, my answer is ''Yes''. Because I can prove it.
What is light year?
Light year means how far light can go during a year.
Speed of Light
for 1 sec : 300 000 km
1 hour : 1 080 000 000 Km
Do you know sun light takes 8 min to come to earth (distance: 149 600 000 km)
And the next thing is How we see?
actually when light came into our eye we can see it. If light doesn't come to our eye, brain identify it as dark.
So, according to the distance of sun, light takes 8 min to reach our eye so can you understand when you look at the sun, actually you can't the present sun, only u can see the how sun was before 8 min from this time. actually you see the sun 8 min past. It means you saw the past. It is a kind of a time travel.
Nasa found the oldest star BD+17 3248. It old 13.8 billion years, actually distance from earth is 13.8 billion light years. That's maximum distance that can be seen over the time.
So when you look at that star u can see the 13.8 billion years history of BD+17 3248 star.
Now you know, light takes some time to visit.
Sound is lot slower than light.
speed of sound : 1 235 Km per hour
Actually Supe sonic jets can reach this speed
imagine when u ride you bike and you can hear the sound of your engine because sound speeder than you. So if you can travel by speeder than sound, actually you can.t hear your or engine sound because at that speed sound waves always behind you because you speeder than sound waves.
Actually super sonic jets can do it.
| time that reach the speed of sound at speed 1 235 kph (it makes instant cloud) |
We can that same method for light too...
Imagine that:
You are riding a bike and you can see you, bike, road, other vehicles, etc because light speeder than you. but think you are riding some thing to 1 070 000 000 km per hour speed still you can see you but reach 1 080 000 000 kph you cant see properly and if ridding more speeder than that speed and you are looking your behind while riding, at that time you will wonder because you can see you behind you as riding a bike. actually you can see you how you looks like before several seconds.
that's the method you can see your past, Did you understood how hard it was. But we can do it in future one day. We can't guess what centenary is it.
Good jobπ
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