https://www.cnet.com/news/nasa-mars-mission-gets-perfect-explainer-from-the-oatmeal/

The Oatmeal comic covers a lot of ground, from the mole to the "seven minutes of terror," a description of the process of entry, descent and landing. This is a hairy time, when NASA waits for word from InSight on whether the arrival was successful. 

Inman will be at NASA's Jet Propulsion Laboratory in Pasadena, California, during InSight's landing. You can follow his live tweets during the process. He recommends tuning in starting at 11 a.m. Pacific Time, an hour ahead of the scheduled touch down.