In this 3-part virtual lab, students will understand the ways in which astronomers measure star brightness. This lab covers both apparent and absolute magnitude. In Part 1, students watch a short video and read through a small webpage to answer 7 background questions about magnitude. In Part 2, they use the "Apparent magnitude, Absolute magnitude, and Distance to stars" JavaLab, created by DongJoon, to practice adjusting star brightness to their absolute magnitude by moving them to a distance of