Hertzsprung-Russell Diagram

1.) It is important for us to know the life cycle of a star so that we are able to prepare for when it dies.
2.) It measures the luminosity (solar units) and the temperature.
3.) The sun would be found at 6,000 Kelvins and 1 luminosity

Size And Distances in Space

Very big and cool,
I just now learned it in school,

Solar System whooo!