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Why do planets orbit the same way?

This video explains how the solar system formed and why most planets move in the same direction, using basic physics and ...
Today In The Space World on MSN

The cosmic race: How long each planet takes to orbit the sun

Explore the solar system from Mercury to Pluto and discover the extraordinary differences in orbital speed, year length, and rotation. Learn how Mercury completes a year in just 88 days, while Neptune ...