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I'm looking for three stories about physics being different in the presence of a gravitational field. I have not read these books, they were mentioned on the Worldbuilding stackexchange, here: https://worldbuilding.stackexchange.com/a/73915/84702. The relevant quote is:

Several sf stories are based on the idea that physics is different in the presence of a gravitational field stronger than X. E.g. Any story that requires some distance from the star to enter hyperspace. A few are explicit, one postulated that the negative results of the Michelson-Morley experiment was due to the experiment being done too deep in a gravitational well.

Another had a crashed spaceship on Earth that still had a running drive. The drive 'froze' the ether locally. Aliens watched from a distance with amazement at the development of relativity.

I don't have any of the usual extra info about these for the story identification tag because I've not read them.

For clarity, the three I'm looking for are:

  1. A story that requires some distance from the star to enter hyperspace.
  2. A story where the negative result of the Michelson-Morley experiment was due to the experiment being done too deep in a gravitational well.
  3. A story where a spaceship crashed on Earth which froze the ether locally. Aliens watched from a distance with amazement at the development of relativity.
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    Requests for three separate books (unless they're part of a series) should be asked in three separate questions. However, I doubt that any of these would make for good questions anyway, since you wouldn't be able to recognize correct answers. – jwodder Apr 6 at 21:00
  • "story that requires some distance from the star to enter hyperspace." - Star Wars. – Valorum Apr 6 at 21:07
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    The third story is probably "Local Effect", see this Q&A: scifi.stackexchange.com/questions/155780/… – user14111 Apr 6 at 21:10
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    @DavidW - They can now that they threw the canon in the bin. They couldn't before. – Valorum Apr 6 at 22:07
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    Long before Star Wars, plenty of stories had the rule that you can't go into hyperspace if you're too close to a star. I'm pretty sure Heinlein used that trope, eg in Starman Jones, but it's certainly older than that, perhaps going back to the earliest hyperspace stories by Campbell. – PM 2Ring Apr 7 at 4:52