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I had amazing luck getting the title of my first lost book discovered for me--thanks Hank--so I want to try my chances again.

I am looking for title of a book about a disc shaped world where the gravity is weakest at the edges and gets progressively heavier the closer you get to the middle. I think the word "Gravity" is in the title, but I am not sure. I also do remember who the author was.

- The main characters are aliens that look similar to centipeds and they are helping humans recover a probe or something like that.
- The humans cannot go down onto the planet becaused they would be crushed by the gravity where the probe is located.
- The humans communicate with the aliens using a radio or some similar device.

The book could have been published in the 80's or earlier.

I really enjoyed re-reading (or listening) Manhattan Transfer and I hope to duplicate that experience if I can find this lost book.

Cheers,
John "That Cowboy Guy" Gibson

Mission of Gravity by Hal Clement would seem to fit the bill rather well for this one.

Richard wrote: "Mission of Gravity by Hal Clement would seem to fit the bill rather well for this one."

Bam!! Two for two on finding lost books on the first reply! Yes, that's the title I was looking for--thanks Richard.