What would happen if you had a lightyear long stick, and you pushed it. Would the other end move as you pushed it, or would it take a year?
In: Physics
It would take many, many years. The speed that a shove travels through something is called the speed of sound, and even for something like steel it’s a few kilometers per second. Light speed is 300,000 km/s.
So one light year would take a hundred thousand years or so.
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