Originally posted by twhiteheadThe moon is trying to get Earth in a synchronized rotation, slowly succeding, another few billions of years it has succeeded. But Earth with its relative small gravitaional force (compared to the two suns orbiting eachother) has syncronized the rotation of the Moon.
I disagree. That is not a forgone conclusion. The tidal force would be twice as strong as the sun exerts on earth but that isn't a whole lot. The moons effect is stronger and has not yet managed to get the earth into a synchronous rotation.
Think of two massive stars dragging the planets surface from two opposite directions. I think that the planet would stop the rotation and enter the synchronous state quite quickly, giving the planet two fixed bulges (of the same kind Earth has given its Moon.) If the planets inhabitants call it tidal forces or not is another problem, as the bulges are fixed in the same place, and is not being noticed unless satellite measuring is made.
i just reread Marune; Alastor 933" for the Xth time (by Jack Vance).
four stars, one significant planet. the stars are different colors.
i forget the details, but two of the stars rotate about each other, which together rotate with another or two, one or two of which the planet is rotating with.
so instead of having day and night, the inhabitants have a table of ascendant suns, the sum of which determines the current sunlight color and also the current allowed behavior of the inhabitants.
there are three Alastor (Trullion, Marune, and Wyst). they've been collected into a volume, Alastor. it's pretty good. i found it at the library a couple of weeks ago and reread all three novels.
http://en.wikipedia.org/wiki/Jack_Vance#Biography
Biography
Vance's grandfather supposedly arrived in California from Michigan a decade before the Gold Rush and married a San Francisco girl. (Early family records were apparently destroyed in the fire following the 1906 San Francisco Earthquake.) Vance's early childhood was spent in San Francisco. With the early separation of his parents, Vance's mother moved young Vance and his siblings to Vance's maternal grandfather's California ranch near Oakley in the delta of the Sacramento River. This early setting formed Vance's love of the outdoors, and allowed him time to indulge his passion as an avid reader. With the death of his grandfather, the Vance's family fortune nosedived, and Vance was forced to leave junior college and work to support himself, assisting his mother when able. Vance plied many trades for short stretches: a bell-hop (a "miserable year"😉, in a cannery, and on a gold dredge,[3] before entering the University of California, Berkeley where, over a six-year period, he studied mining engineering, physics, journalism and English. Vance wrote one of his first science fiction stories for an English class assignment; his professor's reaction was “We also have a piece of science fiction” in a scornful tone, Vance’s first negative review.[4] He worked for a while as an electrician in the naval shipyards at Pearl Harbor, Hawaii -- for "56 cents an hour". After working on a degaussing crew for a period, he left about a month before the attack on Pearl Harbor.[3]
Vance graduated in 1942. Weak eyesight prevented military service. He found a job as a rigger at the Kaiser Shipyard in Richmond, California, and enrolled in an Army Intelligence program to learn Japanese, but washed out. In 1943, he memorized an eye chart and became an able seaman in the Merchant Marine.[4] In later years, boating remained his favorite recreation; boats and voyages are a frequent theme in his work. He worked as a seaman, a rigger, a surveyor, ceramicist, and carpenter before he established himself fully as a writer, which did not occur until the 1970s.
Jack Vance playing the jazz banjo and kazoo in 1979 in San Francisco
From his youth, Vance has been fascinated by Dixieland and traditional jazz. He is an amateur of the cornet and ukelele, often accompanying himself with a kazoo, and is a competent harmonica player. His first published writings were jazz reviews for The Daily Californian, his college paper, and music is an element in many of his works.
In 1946, Vance met and married the late Norma Genevieve Ingold (died March 25, 2008), another Cal student. Vance continues to live in Oakland, in a house he built and extended with his family over the years, which includes a hand-carved wooden ceiling from Kashmir. The Vances have had extensive travels, including one around-the-world voyage, and often spent several months at a time living in places like Ireland, Tahiti, South Africa, Positano (in Italy) and on a houseboat on Lake Nagin in Kashmir.
Vance began trying to become a professional writer in the late 1940s, in the period of the San Francisco Renaissance--a movement of experimentation in literature and the arts. His first lucrative sale was one of the early Magnus Ridolph stories to Twentieth Century Fox, who also hired him as a screenwriter for the Captain Video television series. The proceeds supported the Vances for a year's travel in Europe.[3] There are various references to the Bay Area Bohemian life in his work.
Science fiction authors Frank Herbert and Poul Anderson were among Vance's closest friends. The three jointly built a houseboat which they sailed in the Sacramento Delta. The Vances and the Herberts lived near Lake Chapala in Mexico together for a period.
Although legally blind since the 1980s, Vance has continued to write with the aid of BigEd software, written especially for him by Kim Kokkonen. His most recent novel was Lurulu. Although Vance had stated Lurulu would be his final book[5], he has since completed an autobiography which was published in July 2009.[6]
Originally posted by SuzianneBookmarked! Also thanks!
This site may be of interest to you guys.
http://www.orbitsimulator.com/
The main feature of the site seems to be an orbit/gravity simulator, and from reading about the site, I think it may be possible to create your own scenarios. Go check it out.