This is not an official standard, but it seems to have some value to me. However, I can easily imagine a different planetary system round another star with much larger moons.
Orbit
The eight official planets do not cross one another's orbits Cheap Max Scherzer Jersey , while Pluto crosses Neptune's. That is, all of the planets have nearly circular orbits while Pluto has a much more elliptical one.
Plane
The eight official planets orbit the Sun in a single geometric plane known as the plane.
Eris
Increasingly we're discovering items similar to Pluto. How many of those ought to be considered to be planets? The discovery of Eris was clearly one of the things that made the international astronomical community look seriously at Pluto's status. Eris is a little. Cheap NBA Jerseys Cheap Jerseys Wholesale Jerseys Wholesale Jerseys China Wholesale Soccer Jerseys Cheap Jerseys China Cheap NFL Jerseys Wholesale Jerseys Wholesale NFL Jerseys Wholesale NFL Jerseys
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