Friday, July 5, 2019

A Faster Earth (part 7/7)


Ultimately, the possibility of our planet's spin increasing is very low. In fact, the Earth has already been slowing in its rotation at a rate of 3.8 mph...every 10 million years. Most of this slowdown is due to the gravitational pull of our own moon. It seems unlikely that the human race will still be around 10 million years from now—I think we have other, more pressing concerns than our planet speeding up or slowing down in its rotation. However, it is still fascinating to consider how precarious our existence is and the balance that maintains it. Just a little faster or slower, and life on this Earth would totally change or even cease to exist. Understanding all these details, though, does help science fiction writers to imagine other worlds and how they might be different from Earth. It also makes me wonder how alien life on other planets would be different from us, and how their physiology might develop as a result of faster or slower planetary rotation.

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