Re: Astrophysics question

Posted by Amaranth Rose on Feb 01, 2004 at 22:41

Re: Astrophysics question (Pasti)

Mike suggested that I'd need a bigger satellite than 1/10th diameter to produce tides. I don't need very big tides, just enough to wash stuff up on shore and roll stuff around enough to make sand, that sort of thing. I'm trying to keep it within the realms of possibility that the satellite could be a captured asteroid, perhaps accreted over time by impacts with space debris, thus having its own period of spin independent of the planet. I'm a little unsure too about my seawater density, but it's definitely got to be very heavy in some minerals like Al, Li, Mg, Ca, Mn, Fe, Mo, Ti, rare earths, lanthanides, the like. A veritable metal repository, a watery mother lode. Oops, don't want to give away the punch line!

Would a sun alone be enough to produce tides? How about two suns? A binary star? Tides would be higher near the stars, lower further from them, in an eccentric orbit, I am thinking. I have the biology figured out, if I can make the physics work out.

Thanks, again, for the help.

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