HR Diagram

The Hertzsprung-Russell (H-R) Diagram is a scatter plot of stars showing the relationship between their absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

The Main Sequence category contains the most stars.

Our Sun is located in the Main Sequence category.

Main Sequence stars are those that are in the stable phase of hydrogen burning, including stars like our Sun.

Red stars are known for being the coolest stars on the H-R Diagram.

Luminosity indicates the total amount of energy a star emits per second, which helps classify stars on the H-R Diagram.

A star's temperature indicates its color and stage in the stellar lifecycle, with hotter stars appearing blue and cooler stars appearing red.

Supergiants are very large and luminous stars that are found above the Main Sequence on the H-R Diagram.

A white dwarf is a small, dense star that is the remnant of a star that has exhausted its nuclear fuel and is found below the Main Sequence on the H-R Diagram.

A star's color is directly related to its temperature; hotter stars are blue, while cooler stars are red.