Are the orbits of all planets in a same plane geometrically?

Not in same plane ! Sun is also moving in space with a speed approx 72000 Km / hour and if planets moves around sun their motion can neither be elliptical nor circular. There is no way that motion happen in one plane. read more

Not in same plane ! Sun is also moving in space with a speed approx 72,000 Km / hour and if planets moves around sun their motion can neither be elliptical nor circular. read more

The orbits of the planets are for the most part on the same plane, disregarding Pluto, in fact Mercury has a 7 degree difference from a plane in which the Earth is at 0 degrees and the rest of the planets differ around 1-3 degrees max. read more

The orbits of the planets are coplanar because during the Solar System's formation, the planets formed out of a disk of dust which surrounded the Sun. Because that disk of dust was a disk, all in a plane, all of the planets formed in a plane as well. read more