• Question: Can time travel ever be invented?

    Asked by Khadija to Christie, Dan, David, Dawn, Sian on 14 Jun 2016. This question was also asked by SwegMaster101.
    • Photo: Dawn Lau

      Dawn Lau answered on 14 Jun 2016:

      It is theoretically possible, yes, I just don’t think we have the technology to make it happen in our lifetime yet. Brian Cox has a really nice demonstration about how time travel into the future (but not to the past) is possible: https://www.youtube.com/watch?v=-O8lBIcHre0

    • Photo: Dan Lewis

      Dan Lewis answered on 14 Jun 2016:

      I hope can be one day it will make going on holiday so much more fun.

    • Photo: Christie Waddington

      Christie Waddington answered on 17 Jun 2016:

      Certainly Stephen Hawking thinks so! He thinks that if a spaceship could go fast enough, then time will slow down for those on the spaceship. This would only allow us to time travel forwards though, not backwards. Backwards time travel, he thinks, would be impossible due to the time paradox E.g. a person travelling back in time to shoot themselves.

      The speed of this spaceship though would have to be something like 650 million miles per hour. One day on the ship would be the same as one year on earth.

    • Photo: David Robertson

      David Robertson answered on 17 Jun 2016:

      Yes, but only forwards in time, so you’d have to be very sure you wanted to go and leave the current time behind.

    • Photo: Sian Thomas

      Sian Thomas answered on 20 Jun 2016:

      There is also a social science part to this – deciding to leave the current time and travel to the future could have psychological and societal implications that we need to be prepared to deal with!

Comments