Stellaris is a very comprehensive astronomy suite that goes far beyond displaying the nightly sky. Showing the positions of stars, planets, and Deep Sky objects for an arbitrary time and location is just one feature among many. The program's wide range of features addresses all users, from beginner to experienced. For beginners, the program's Educator tool interactively demonstrates and explains astronomical concepts and current phenomena. Intermediate users will find the Event Forecast useful, which automatically forecasts relevant astronomical events such as conjunctions and eclipses. Experienced users can go a step further and let Stellaris find occurrences of user-defined phenomena, such as "sunrise before 7 AM". Stellaris can generate reports of past and future astronomical phenomena. A report contains data for one day/night, one month, or one year. While a night report contains data which is useful for one observation night, such as the visible planets, a month report also contains the positions of the Jovian and Saturnian satellites for the entire month. The program can calculate a wealth of data for all celestial bodies. This data can be calculated for an arbitrary time span and displayed as a graph. A very useful feature is the Related Tasks window that suggests which actions you may want to take next. If you are examining the Moon in the sky window, the Related Tasks window offers to display an image of the Moon, search for a lunar eclipse, or generate a report of the Moon's ephemerides for the current year. Each of these actions can be performed with a single click. After choosing an action, the Related Tasks window again suggests reasonable next steps. This way, you are led through the program with very little learning effort. Stellaris also features an interactive Quick Tour and an extensive help file which explain all the program's features in detail.