I know an object can be stationary relative to another, but is there anything absolutely stationary in the universe? Or is space itself expanding and thus nothing is stationary?
In: Physics
Let’s say you are out in deep space. You are in a space suit and are absolutely stationary. You aren’t moving at all. Now, out of nowhere comes this other dude in a space suit. He goes flying by you really fast. That idiot almost slams into you! Why doesn’t he watch where he’s going?
The thing is, from his perspective, *he* was just floating there perfectly stationary. He thinks *you’re* the idiot who was flying out of control and wasn’t watching where he was going.
There’s no universal point of reference to decide who is stationary and who is not. Everything is moving around compared to some other thing.
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