Asterisms vs. Constellations

1
Asterisms vs. Constellations
Asterism - Easily recognizable pattern of stars.
Can be within a constellation (e.g., Big
Dipper in Ursa Major) OR From
more than one constellation (e.g., Summer
Triangle one star each from Lyra, Cygnus and
Aquila)
Centaurus
2
Constellations
Constellations are now defined by the IAU as 88
areas of the sky. They usually contain the old
star groups from earlier times.