Two of my fellow NASA scientists (Dr. Holly Gilbert and Dr. Phil Chamberlin) and I answer some common questions about the sun, space weather, and how they affect the Earth. This is a two-part series.

Part One addresses:

1. What is space weather?

2. What are coronal mass ejections?

3. What are solar flares?

4. What are solar energetic particles?

5. What causes flares and CMEs?
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