The Speed of Light
The light moves with 300,000 km in a second. This thinking seems to not reachable as a speed in our earth. So the light can go round of our earth seven times in a second. We could have gone to the Moon in a second. But if we think to have a massive earth, the speed of light doesn't enough. If we could move at the speed of light we could go to the sun in eight minutes or could go to Andromeda which is the nearest galaxy in two million years. according to Einstein's Theory of Relativity, there is nothing faster than the speed of light. So the speed of light is the point of limit. It wasn't known a plenty of informations in those days, as today is known it. For example; the universe is getting expanded.

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