The diagonal line from top-left (hot/bright) to bottom-right (cool/dim). About 90% of stars, including our , are here. They are all fusing hydrogen in their cores. Red Giants & Supergiants: Found in the
Before you take the quiz, let's break down exactly what you need to know about luminosity, temperature, and the "backwards" graph that changed astronomy forever. astro 7n unit 3 part 2 hr diagram quiz
For the math/logic questions on the quiz, remember this formula (Stefan-Boltzmann Law conceptually): The diagonal line from top-left (hot/bright) to bottom-right