deletions | additions       diff --git a/One_of_the_first_questions__.tex b/One_of_the_first_questions__.tex  index 84352d8..43fc9ed 100644  --- a/One_of_the_first_questions__.tex  +++ b/One_of_the_first_questions__.tex 
...
One of the first questions that I ran into in this report was if spiral galaxies are completely round (an eccentricity of 0). This is an important question to answer because if galaxies have an eccentricity of 0, we can use the line of nodes as the major axis. We need to know this because if spiral galaxies are not circular, we can not measure the radial velocities because we can only measure the radial velocities along the major axis. Our conclusion after analyzing real galaxy data and computer simulations is that spiral galaxies are circular, and we can therefore use the length of the galaxy as the major axis and line of nodes. Because galaxies are circular, the major axis represents the areas of maximum doppler shift or maximum radial velocity.