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Using an internet-capable laptop or desktop computer, go to the Mars Trek website.
A pop-up window will load, inviting you to do a tutorial. If this is your first time visiting the site, you may want to accept, otherwise you can select Skip Tutorial.
Next, you’ll see what is called a Mercator projection map, which takes a 3D globe and stretches it onto a 2D surface where the entire globe is visible in one view. Note: In a Mercator projection, there is a large distortion at the poles, which are stretched to the four corners of the image. The area around the equator is the least distorted.
