However, going back in time goes against the laws of physics- some processes are reversible and some irreversible.

Processes like an avalanche can’t unhappen. Likewise, on a smaller scale, if you drop an egg, you can’t unbreak it.

A spinning top or a pendulum, is reversible because it...

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 space...

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’...

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...