system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How much faster will the Earth need to travel in outer space so we will actually "feel" it? What will we feel if the Earth starts to travel 10x times faster in outer space?
gpt
We wouldn't feel it. We feel changes in motion, like speeding up and slowing down. But if you're cruising along at a steady speed, like in a car or a plane, you feel like you aren't moving at all. (The only reason why you "feel it" in those vehicles is because of vibrations on the road or the vibrations of air buffeting the plane.)

In fact, the idea of relativity goes so far to prove that whether or not something is even moving at all depends on where you stand. In a train, the seats don't appear to be moving. But from the outside, the seats are moving very fast. There is no objective, better way to judge speed. Everything is relative. 

Of course, if the earth were moving faster it couldn't stay in its current orbit and we'd certainly notice the difference in sunlight!