Hello Everyone,
This is a continuation of our previous episode "Can we see live dinosaur in 21st century?" If you haven't read it, I highly recommend you to read it before continuing this article. Or let me summarize quickly, photon is the basic building block of our vision. This photon can travel in straight line about 300 thousand kilometers per second. the distance photon can travel in one year is called one light year. Photons hit on dinosaurs 250 million years ago could have reach 250 million light years by now. Frankenstein galaxy is in approximately 250 million years away, in that case, from Frankenstein galaxy if you look at earth now, we can see dinosaur. But how to get there, that is the question we are going to answer today.
Introduction:
To go to a place where gravity undefiled light took 250 million light years in just a matter of our life time may look impossible, but it is not. if we know the special theory of relativity that will look very simple. because it explains a beautiful relationship between speed and time.
Time Dilation:
whenever an object started moving, it starts experiencing time slowly than the object at rest. what? experiencing time slowly? what does it mean? Time is not absolute it is relative. Any given instance, person at rest and person moving will disagree the rate at time changes. In other words, for a moving person time will move slowly than the stationary person. For example, a person driving in a car 100Kmph, then he experiences time 0.00000000926% slower than the person in rest. When speed increases, the person experiences time slowly.
As shown here, whenever speed increases, rate of change of time decreases with respect to the stationary object. ROSS 154 star is 9.68 Light Years away, for a stationary viewers, it would take a space craft to reach approximately 11 years to reach if he travels in 90% speed of light, that is 270000 Kmps. but for the traveler, it would only took around 4.7 years. It is called time dilation. It is common that people disagree with time when one is in station and other in motion. For a simplistic example, international space station is too fast that it experience 7ms less than earth in every six months.
For Frankenstein galaxy, as a stationery viewer it would take 250 million years to take if he travels with 99.99999999999999% speed of light. But for the cruising team it would only take 4 years and 7 months.
Travel Faster Than Light:
But that doesn't seem right, because though it takes ~4.6 Years for the traveler, still it would taking one more 250 Million light years. so surely we will miss the dinosaur event. So we need to come up with other method. What if we travel faster than light? then obviously we will over take the past and still go further past right? if you are familiar with DC's flash,when he time travels,he use to see the past events, that means he is over taking the photon's once reflected from the object. this way it will be easy for us to easily over take our past and reach the destination.
In this example, light from the source and hit on the object and travel in the straight line as we seen in previous episode example, but if a person can travel twice the speed of light he would over take the photon and eventually he will see the events once again. See the counter it shows 2, space traveler also can see number 2, but he cannot see number 1, because it was gone last second. now the next second counter will become 3, person A will see number 2,but you will see the past event number 1, since you travel twice (2x) the speed of light. This same phenomenon will push you further into past if we keep increase the speed than the speed of light. if you can increase the speed 250 million times the speed of light, then in one year you can reach Frankenstein galaxy, as we have seen above, if time dilation happens, you will eventually reach in fraction of second/next instance as a traveler. There are many hypothesis claims that we will reach backward in time. But any way once you reach there, look back and see the earth, you will be able to see the dinosaurs walking around the earth right now. it is easy-breezy. But all the hypothesis will have a catch.I hope most of you will know it. But still anyway I will explain.
Challenges:
As per the special theory of relativity, speed of light (C) is constant. to reach this velocity, the object must be mass-less. Again it stated that anything with mass can not reach/go beyond the speed of light. So in that case, it is difficult to go 250 million times faster than light. With current understanding of physics, it looks impossible. But it may not be in the future, who knows.
Apart from that, past and future time cone, such a powerful telescope, amount of light reaches that galaxy and Power source to thrust the spacecraft in the speed of light, in that speed, body experiencing G force, space dust hit the space craft in the speed of light are the few other major concerns to discuss.
But many sci-fi movies are talking about black-hole, warm-hole, infinite string and faster than light through anti-matter, what is it? will that help any way? Wait for next article!
Conclusion:
With current technology and the understanding of physics force us to give a answer that "In 21st century it is not possible to see alive Dinosaurs". If you have any opinion about this article please share your feedback in the comments below. I'll try to answer it.
Thank you
Reference Links:
https://www.youtube.com/watch?v=wkFtXtVVcyQ 10:30
https://www.dummies.com/education/science/physics/formulas-from-einsteins-theory-of-special-relativity/
Credits:
Flash Video: DC Comics and Warner Bros. Television Distribution
Disclaimer: Thank you for all authors of all those clipart and images used.
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