Star
Blue Giant
A massive, very hot luminous star.
Spectral type O or B luminosity class III stars — much hotter (over 10,000 K) and brighter than the Sun. Short lifetimes of only millions of years.
Overview
Spectral type O or B luminosity class III stars — much hotter (over 10,000 K) and brighter than the Sun. Short lifetimes of only millions of years.
See also
Blue Supergiant
A hot, massive, ferociously luminous star.
Vega
The summer beacon, future pole star.
Altair
The flying eagle — fastest-spinning bright star.
Red Giant
A bloated, cool, ageing star.
Hypergiant
The most luminous and unstable stars in the cosmos.
Red Dwarf
The most common — and longest-lived — kind of star.