Milky Way galaxy

  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.  

Countries contribute the most CO2

  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?    ...

On January 1st, mars is seen to be in opposition

Let’s say that on January 1st, mars is seen to be in opposition. [in some random year]. Then 13 months later (on February 1st of the following year) Mars is observed to be in Conjunction. What is the Sidereal Period of Mars that would be calculated from these...

The molecules that are trapped in a planet’s atmosphere

  The molecules that are trapped in a planet’s atmosphere depend on their mass, the planet’s mass, the planet’s radius, and the planet’s temperature. The equation showing the temperature limit is given in Module 5c (the planet must be cooler than this to retain...