What is one observation that has led to our modern theory of solar system formation? Explain.
2. What celestial body do you believe Pluto to be? Explain your answer.
3. How will geological processes affect the evidence of our civilization for future archaeologies or alien
If the asteroid impact 65 million years ago had not occurred, how do you think our planet would be
5. What do you believe other solar systems to be like in our universe?
visitors in the future? How should the landscape around where you live change over the next billion