The solar system is not a spiral, it's a series of ellipses.
Don't feel bad, a lot of people get solar systems and galaxies mixed up.

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Rovers forever! - ToSeek
"The only way to explore the universe is to go and look." - Brian Cox
Well, the best way to find out is to go there and, find out. - Raven's Cry
'Evolution and science are one thing, but you don’t mess with Yoko Ono. Everybody knows that. ' - 386sx