• Question: At what speed can you time travel?

    Asked by Charlie to Arthur, Clare, Daniel, David, Tora on 18 Nov 2014.
    • Photo: David Wilson

      David Wilson answered on 18 Nov 2014:

      We don’t know how to time travel in the way, for eg, Dr Who does- but if you travel really fast then time will slow down for you. This means that if you flew around the solar system really quickly then came back to Earth, more time would have gone by for them than for you- it would be like going into the future. You have to travel really fast for this to happen though- you need to be at about 90% of lightspeed for this “time dilation” to really start kicking in.

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