# The hypothetical "top" and "bottom" of the Earth (better explained in OP)

**URL:** <https://boards.straightdope.com/t/the-hypothetical-top-and-bottom-of-the-earth-better-explained-in-op/1009122>\
**Category:** Factual Questions\
**Created:** [October 23, 2024, 11:26pm UTC](https://boards.straightdope.com/t/the-hypothetical-top-and-bottom-of-the-earth-better-explained-in-op/1009122 "2024-10-23T23:26:16Z")\
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**Author:** ![Lumpy](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lumpy/32/446_2.png) [@Lumpy](https://boards.straightdope.com/u/Lumpy)\
**Post date:** [October 24, 2024, 2:08am UTC](https://boards.straightdope.com/t/the-hypothetical-top-and-bottom-of-the-earth-better-explained-in-op/1009122/7 "2024-10-24T02:08:59Z")

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From The Great Ongoing Space Exploration Thread

> [@The Great Ongoing Space Exploration Thread](https://boards.straightdope.com/t/the-great-ongoing-space-exploration-thread/925703/1652):
>
> Without correction, geo satellites will drift to one of two longitudes (75 and 255).

I presume there’s some sort of geodesy reason why those longitudes are the most stable?

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