Solar system: Comets and asteroids • English Conversation Questions

What are comets and asteroids, and how are they different from each other?
What impact have comets and asteroids had on the solar system over time?
What kind of technology is used to study comets and asteroids?
What are some of the most interesting and mysterious features of comets and asteroids?
How have our views of comets and asteroids changed over time?
What kind of impact could a large asteroid or comet have on Earth?
How do scientists track potentially dangerous comets and asteroids?
What are some of the most important discoveries that have been made about comets and asteroids?
What can we learn from studying comets and asteroids that we can’t learn from studying other parts of the solar system?
What kind of technology could be used to prevent a catastrophic impact from a comet or asteroid?
What are some of the ethical considerations involved in trying to prevent a comet or asteroid impact?