๐˜Š๐˜ข๐˜ฏ ๐˜ต๐˜ช๐˜ฎ๐˜ฆ ๐˜ต๐˜ณ๐˜ข๐˜ท๐˜ฆ๐˜ญ ๐˜ฆ๐˜ท๐˜ฆ๐˜ณ ๐˜ฃ๐˜ฆ ๐˜ฑ๐˜ฐ๐˜ด๐˜ด๐˜ช๐˜ฃ๐˜ญ๐˜ฆ? - Deepstash

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Time TRAVEL- A One Way Ticket?

Time TRAVEL- A One Way Ticket?

To look at whether time travel is possible we need to distinguish between travelling back and travelling forwards. โ€œFrom a philosophical point of view, we are constantly time travelling! As we age in our ordinary everyday lives, we are forever travelling into the future'.ย 

โ€œThe more interesting idea is being able to access a future everyone else is travelling slowly towards. So you move forward without ageing. And that, in theory, is actually perfectly possible,โ€ he says.

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Going Forward In Time

Going Forward In Time

You may have heard of Cryogenics. This is when someone whoโ€™s died is frozen instead of being buried or cremated. The theory is they can be โ€œwoken upโ€ in the future when we have the technology to bring them back to life. Or a machine or device could be developed so that some people age more slowly than others around them. This way theyโ€™d live longer and see a future beyond the average personโ€™s life span.ย 

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Another method might involve travelling in a rocket/spaceship at a very high speed, close to the speed of light. โ€œWe canโ€™t establish equality with the speed of light but it is possible, in theory, to travel nearly as fast as the speed of light,โ€ adds Dr Steane.ย 

So imagine youโ€™re in a spaceship travelling very fast away from the Earth and you stay in orbit for a year. You'd age at the same rate as if you were still on the Earth, by a year, but when you returned, the earth may have aged hundreds of years. โ€œThis is way beyond the technology we have at the moment, but in theory, it's possible.โ€ย 

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Going Back?

Going Back?

So we may one day be able to time travel forwards but what about going back?

โ€œHere we hit the philosophical problem that always comes up when you discuss travelling back in time,โ€ says Dr Steane. "Suppose you could go back in time and you accidentally killed your grandparents. Wouldnโ€™t that mean you couldnโ€™t exist either?"

So how could you go back in time and see people whoโ€™ve died - some of them hundreds of years ago?

It's very complex.

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However, going back in time goes against the laws of physics- some processes are reversible and some irreversible.

Processes like an avalanche canโ€™t unhappen. Likewise, on a smaller scale, if you drop an egg, you canโ€™t unbreak it.

A spinning top or a pendulum, is reversible because it keeps moving, repeating itself. Nothing really happens. โ€œWithin physics, weโ€™re very aware of these issues. The world is irreversible. And so are our lives. We grow, we age, we die,โ€ says Dr Steane.

You canโ€™t reverse the effects of a catastrophic event. And thatโ€™s why going back in time is not likely to be possible.

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Your Very Own Time Travel

Your Very Own Time Travel

If youโ€™re feeling disappointed that we canโ€™t literally travel back in time then remember thereโ€™s nowhere you canโ€™t go in your own mind.

Think about history lessons where youโ€™re asked to imagine yourself in someone elseโ€™s shoes from long ago or when you look at old photos of fun times. Thatโ€™s time travel. And what about when you read a book or listen to aย story told by a grandparent?

You can transport yourself to anywhere back in time and the beauty is you can come back. Since isnโ€™t the greatest fear of time travelling getting stuck in a different time zone and never being able to return?

ย 

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IDEAS CURATED BY

a.15

โ€œ๐‘ป๐’‰๐’† ๐’๐’Š๐’‡๐’† ๐’๐’‡ ๐’•๐’‰๐’Š๐’” ๐’˜๐’๐’“๐’๐’… ๐’Š๐’” ๐’Ž๐’†๐’“๐’†๐’๐’š ๐’†๐’๐’‹๐’๐’š๐’Ž๐’†๐’๐’• ๐’๐’‡ ๐’…๐’†๐’๐’–๐’”๐’Š๐’๐’.โ€ ๐‘ธ๐’–๐’“๐’‚๐’ 3:185

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