The Hertzsprung-Russell Diagram of the Nearest Stars

The HR diagram of the stars within 10 parsecs is
presented on this page.  The diagram reveals that we are
surrounded largely by two types of star: dark main-sequence
stars and degenerate dwarfs.  Stars like the Sun are the
exception rather than the rule, and the more luminous A stars
and red giants are rather rare.  The brilliant and massive
supergiant O and B stars, of which Rigel in the constellation
Orion is an example, are completely absent from the local
stellar neighborhood, despite their prominence in the night
sky.  Most stars in the Galactic disk are much less luminous
than the Sun, and most of the stellar mass of the Galactic
disk is in these stars.

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