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There are 100 billion stars in our Milky Way galaxy. Based on everything you have learned in this course, and any other ideas you may have, make an estimate of the number of planets in our galaxy on which some type of life has formed.
Name three factors you would consider crucial for the development of life on another planet. Why are they important?
Try to use data from the most recent year available. A.) How much Carbon Dioxide do the people of Earth add to the atmosphere in one year? B.) Which four countries contribute the most CO2 to the atmosphere?
How does the surface temperature of Venus compare to surface temperatures on Earth? Why is Venus this temperature?
The Fermi paradox states that if technologically advanced civilizations are common in the Galaxy, then they should have visited or colonized the Earth already. And yet, there is no evidence that intelligent civilizations have ever visited the Earth. What do you...
Should we be broadcasting radio signals in outer space to advertise that we exist? Why or why not? Please justify your answer with as many arguments as possible.
