Time Travel

Can you see what happened a million years ago?

Is time travel possible? Many have no answer to this question but there are theories which say it can be possible. If possible, can you change an event in past to affect the future?

The answer to it is -"No!" You cant change an event if the concept of time travel exists.

To know more about it, we must understand what a time travel is?

Time travel means traveling through time to either future or past.


For an example, if you want to know your tomorrow's science exam question paper, you just travel to tomorrow by your time traveling machine, see the question paper, and come back to prepare same questions for tomorrow's exam. It is as simple as that until you have a time-traveling machine but the current technology won't allow us to travel through time and go to future.

But, what if I say you that we have the devices to see past events? Yes! You heard it

right. We have time traveling devices(in a way) and they are called cameras and video
cameras. When you see a Polaroid or a Photograph, you're actually seeing your
past "you". These photographs are taken in past and making you witness the same
events in the future. Which makes it a type of time travel.

(M100 Galaxy)

There is a theory which says we can still witness dinosaurs roaming around our planet but it is only possible when you have a WORMHOLE( it is a concept of bending space and time to shortcut your distances). Imagine you travel through a wormhole with the fastest spacecraft to a galaxy named "MESSIER 100" which is some 50 millionlight-years away from Earth. Imagine you landed on a planet there with Earth's most powerful telescope "THE HUBBLE TELESCOPE". You could see dinosaurs roaming on earth or you could even see the extinction of them if you landed there on right time. Now, you might be having a question stating-"How can this happen?". It can happen because light travels at 3 x 10^8 meters/second (i.e., 300,000 kilometers/second) and it takes 50 million years for the light of earth to reach M100( there is no obstacle in between them). So, you could witness the Earth 50 million years in the past and see the extinction of dinosaurs.

(Concept of wormhole)

This can also be the reason why won't alien visit earth from another galaxy even after they having enough technology. Because according to them we are still in stone age.

Can we see what happened a million years ago?

My answer is YES and NO.