Question: For your first post: Describe what Aurora is. What is the mechanism of creation of these colorful lights? How is the magnetic field of Earth

  1. For your first post: Describe what Aurora is. What is the mechanism of creation of these colorful lights? How is the magnetic field of Earth involved?
  2. Many people call Aurora "Aurora Borealis" or "Northern Lights". Is it possible to observe Aurora in the Southern hemisphere?
  3. For your second post, apply your knowledge gained in this module and answer the following: A cosmic ray proton moving toward Earth at5.0010^7m/sexperiences a magnetic force of1.7010^16N. What is the strength of the magnetic field, if there is a45angle between it and the proton's velocity?
  4. Make a new thread and post your results and calculations in your second discussion post.
  5. Explain in your second post whetherthis numerical value is consistent with the known strength of Earth's magnetic field on its surface. Discuss.

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