why would the existence of orderly patterns of motion in our Solar System suggest that the Sun and planets all formed at one time from one cloud of gas, rather than as individual objects at different times.How do patterns of motion suggest the Sun and planets formed from one gas could?Any outsider would have an equal probability of having any random inclination possible, yet they are all roughly close to within 5 degrees of each other. None of them are orbiting retrograde, which suggests that a "late forming planet" probably wasn't the case, as the planets used up most of the mass of the nebulae as they were froming together, leaving "not much" left for some other planet to form late.
The minimal eccentricity of all of them suggests nothing massive was introduced late to perturb the establishing orbits.
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