Hello freinds, if we go to mars with today’s speed of spacecraft, we will reach their in 6 months

Light can achieve this distance in 3 minutes 2 seconds , but is this light speed is sufficient,

If in future, if we started living on mars , then a friend if what’s app you his message will reach you in 3 minutes 2 seconds, and if the message has to go to promixa centrui , then it take 4 years , and 3 months, with light speed

And to reach andromeda galaxy, it will take 25 lakh 37000 years , now I am only talking of communication, but if we physically go there , then it will be possible only in crore years

In universe, the far away stars , to which travel was our childhood dreams, that is not possible in reality , but a question arises , why it is not possible

Why can’t we travel faster than speed of light , you have heard many times, if we move faster than speed of light, then we have to face many paradoxes

Why does this paradox created , what is the reason, the speed limit, is explained by Einstein, applied on objects, but not on space, it means space can travel faster than light

If we learn to manipulate space , then may be , we can travel faster than light , in the year 1994 , Miguel Alcubierre, has given such concept, which is called as Alcubierre drive

Alcubierre drive expands its back space, and contracts the front space, by which it can travel faster than light, but practically this type of machine is not possible till now

Because we have to get incredible amount of energy and exotic materials for this machine, and this machine is designed on general relativity, and it has not considered quantum mechanics

Some people believe, that in space there are wormholes, by which in space two distant points, can be traveled faster than light, but the existence of wormholes is also to prove is also a challenge,

Our whole physics is saying, that nothing can travel faster than light, and if the objects started travelling faster than light , then causality principal will break

Causality describes the process and consequences from an action: a cause has an effect. Causality is preserved in classical physics as well as in special and general theories of relativity. Surprisingly, causality as a relationship between the cause and its effect is in neither of these theories considered a law or a principle. Its existence in physics has even been challenged by prominent opponents in part due to the time symmetric nature of the physical laws

If causality principle breaks then in universe, what happened first and last can’t be determined, the order will completely change,

So the fastest speed in the universe can’t break causality principles, because breaking it with current technology is not possible and if breaks causes paradox

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