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Asked by Mia Burns to Hannah, Lucy, Phil, rochellevelho, Stephen on 13 Mar 2017.
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Lucy Kissick answered on 13 Mar 2017:
Well I’m no Time Lord or theoretical physicist, but my understanding is time as we know it cannot run backwards: once a moment is passed it is gone forever. However, when you travel at incredibly last speeds (close to the speed of light) time travels faster for people not travelling that fast. If you zoomed off at light speed to a nice nearby star then came home, hundreds of years or more will have passed on Earth but you might have barely aged at all. So perhaps you could call this time travel of a sort.
And hey, we’re all time travellers in our way: I’ve travelled in time from the year 1992 when I was born to 2017!!!
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Phil Sutton answered on 13 Mar 2017:
We already have time travel :). We can travel forward in time very easily. According to special relativity as we travel at very fast speeds (near the speed of light) time slows down relative to us from a stationary observer. So if we went in a space craft for a few years and came back to earth we wouldn’t have aged as much as the people on earth. That’s easy time travel. However traveling back in time is much harder. I don’t think that sort of time travel is going to happen any time soon. The only way we can do it is if we understand the more extreme physics of black holes more. There are ideas that as they distort the space and time so much these might be our answer to traveling long distances and in time fast.
I believe can do this but it is a very long way off yet and requires a lot more research.
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Hannah Sargeant answered on 15 Mar 2017:
Unfortunately a scientist may have found some information that says time travel backwards in time may not ever be possible! A man named Marcus Scheck found a special kind of atom that points in the direction of time, this means that there is only one direction time can go in, and we couldn’t ever go backwards in time.
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