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Another method might involve travelling in a rocket/spaceship at a very high speed, close to the speed of light. “We can’t establish equality with the speed of light but it is possible, in theory, to travel nearly as fast as the speed of light,” adds Dr Steane.
So imagine you’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. “This is way beyond the technology we have at the moment, but in theory, it's possible.”
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So we may one day be able to time travel forwards but what about going back?
“Here we hit the philosophical problem that always comes up when you discuss travelling back in time,” says Dr Steane. "Suppose you could go back in time and you accidentally killed your grandparents. Wouldn’t that...
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If you’re feeling disappointed that we can’t literally travel back in time then remember there’s nowhere you can’t go in your own mind.
Think about history lessons where you’re asked to imagine yourself in someone else’s shoes from long ago or when you look at old photos of fun times. That’...
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You may have heard of Cryogenics. This is when someone who’s died is frozen instead of being buried or cremated. The theory is they can be “woken up” 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...
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To look at whether time travel is possible we need to distinguish between travelling back and travelling forwards. “From 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'.
“The more interes...
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Before the Apollo mission research, there were three theories about how the Moon formed.
As mars orbits the Sun, it completes one rotation every 24,6 hours, which is very similar to one day on Earth (23.9 hours). Martian days are called sols—short for "solar day." A year on Mars lasts 669.6 sols, which is the same as 687 Earth days.
Mars' axis of rotation is tilted 25 degrees w...
We see different parts of the Moon light up at different times of the month. This is because the Moon is at different positions in its orbit around Earth relative to the Sun.
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