Color: blue
Surface temp: 10,000° - 28,000° K
Composition: neutral helium, some hydrogen
Mass: 18 sols
Radius: 7 sols
Lumosity: 20,000
Magnitude: -6
Abundance: 0.13% of all stars
Lifetime: 100 million years
Death: supernova, becomes a neutron star
Examples: Rigel, Alpha Eridani