Quick self-quiz
Tap each word to check what it stands for.
When to use it
Use it in stellar astronomy when ordering spectral classes or identifying where a star falls on the H-R diagram.
Example
The Sun is a G-type star, so it sits in the middle of the sequence between the hotter F-type and the cooler K-type stars.
Common mistake
Thinking M-type stars are rare. M-type red dwarfs are actually the most common stars in the galaxy, even though they are the coolest in the sequence.
