The Earth is Orbiting around the Sun ?

We’ve been educated that the earth is orbiting round the sun due to difference of mass or...really ?

Key Point:

Without a reference point, we can say the Earth and the Sun are actually orbiting around each other.

Think it this way,

we say the earth is orbiting around the Sun because the Sun is likely static, plus we chose the reference point as the sun. But what if we choose earth as our reference point ? the earth will be the origin and everything will be moving around the earth. How about we choose Mars as our reference point ?

Conclusion ?

To say something is orbiting, we need a reference point. Still confused? imagine you are driving a car, now, which one is moving? the ground or you ? If you choose the ground as the reference point, you are moving because your coordinates are changing; if you choose your car as your reference point, the ground is moving because its coordinate is moving; If we choose the sun as our reference point, both the ground and you and your car are moving. The same concept can be applied when we are talking about orbiting and rotating.

by Xr.Shim

26 Nov 2019

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