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Asked by anon-295193 on 25 May 2021.
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Jennifer Graham answered on 25 May 2021:
It depends how fast you are travelling!
When you get near the speed of light (300,000,000 metres per second) time goes a lot slower, and things in space can travel faster because there is no air to slow it down! If you have a twin and one of you goes to the space station and wizzes around the Earth for a few months, then the space twin will be a fraction of a second younger than the other twin that stayed on Earth.
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John Grasmeder answered on 26 May 2021:
Earth time is measured in the same hours, minutes and seconds all round the world, it’s just that there are different times depending upon where you are. On the International Space Station which orbits the earth every 45 minutes or so, they also use hours, minutes and seconds too, but as there is no day and night like on earth, they use “Universal Coordinated Time” or UTC, which is the same as Greenwich Mean Time, which is the time we use in Britain in winter. British Summer Time is 1 hour ahead of UTC.
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Emma Yhnell answered on 26 May 2021:
Jennifer and John’s answers below are awesome.
I guess it depends on the speed you are travelling and how you are measuring time. If there are other beings in space, they might have a different way of measuring time to the way that we have on earth.
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Edward Smart answered on 27 May 2021:
The film Interstellar shows planets with different rates of time which you might find interesting.
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