What were the first celestial bodies added to our solar system inventory by Galileo and his telescope? Why were they important?
What will be an ideal response?
Question 2
Which of the following factors could explain a gradual warming trend in a planet's climate?
A) a decreasing albedo
B) a decrease in the amount of greenhouse gases
C) a decrease in the brightness of the Sun
D) a major volcanic eruption that increases the albedo of the planet by making clouds
E) none of the above