ICYMI we have been talking about Earth’s rotation for the past week on FYP!
We started off by asking the simple question: ‘Why did the Earth start spinning in the first place?
But this did not give us any understanding for why the axis of rotation is inclined by 23.5 degrees.
This is where we were introduced to the The Giant Impact Hypothesis which suggested that the Moon formed out of the debris left over from a collision between Earth and an astronomical body the size of Mars, approximately 4.5 billion years ago
Now one of the consequences of living on a rotating object is that it flattens at its poles. The name given to such a flattened object is an oblate spheroid. We understood this using a simple experimental setup:
Leaving all that aside, it was strongly believed by people for a really long time that it were the heavens that moved and not the earth.
It took a lot of debate among philosophers to come to the conclusion that it was indeed the Earth that was rotating. We looked at one such remarkable argument given by Galileo
Having made this journey so far, we finally discussed how humans found a way to utilize the fact that we are on a rotating oblate spheroid to quench our thirst for the ecstatic understanding of the unknown.