Whether all planets revolve around sun in same plane?
1, For the most part. There is some minor deviation (approximately 4%) from the solar equatorial plane. Why? This most likely has to do with the formation of the objects in the solar system as the nebulous could it came from had a rotation to it, this angular momentum made it easier for matter to coalesce along the same plane. Many comets, a few asteroids (probably gravitationally displaced from their original planes) and kupier belt objects do not necessarily orbit along this same plane. 2. No. The galactic equator is significantly differnt than the solar equator (aka ecliptic), this is easily noticable, by looking at star maps that include the milky way and the ecliptic (or, if you know the zodiac). The “why” of this question is most likely attributed to the fact that the age of the milky way exceeds the age of our solar system. The milky way formed earlier, and the location and origin of our solar system has no reason to be bound to the identical angular momentum that created the nu
