1. According to the solar nebula theory, why is the Earth’s orbit nearly in the plane of the… 1 answer below »

1. According to the solar nebula theory, why is the Earth’s orbit nearly in the plane of the sun’s equator? 2. Why does the solar nebula theory predict that planetary systems are common? 3. What is the evidence that the solar system formed about 4.6 billion years ago? 4. If you visited another planetary system, would you be surprised to find planets older than Earth? Why or why not?  

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