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imamartian
imamartian said:What is quite weird is how the Sun and all of the planets move in the same plane across the sky.
It's not odd at all; the solar system formed out of a cloud of gas and dirt with angular momentum in it and it had a dominant axis of rotation. There had to be rotation or else the whole lot would have collapsed into a star without planets. (Somebody once told me that a star has to rotate as well or it won't be stable - but don't quote me on that.)
It's been too many years since I studied space dynamics but I can't quite see how a star system with orbits at random angles could come into being.
ok you're quite right, it's not weird, but it is exciting... and you can clearly see how the ancients thought everything revolved around us.... (the Earth i mean, not DIYnot !!)
And another exciting thing is seeing the Milky Way (on a clear night away from light polution !! It's just above Orion i think.. bubt incredible..
And another weird thought is all the stars and constellations you don't see in the southern hemisphere...