Star Systems
Star Clusters
Star Galaxies
100
A star system with two stars.
What is a binary star?
100
A large group of older stars.
What is a globular cluster?
100
A huge group of individual stars, star systems, star clusters, dust, & gas bound together by gravity.
What is a galaxy?
200
A group of stars that appear to form a pattern.
What is a constellation?
200
A diagram used by astronomers to plot the stars of a cluster.
What is an H-R diagram?
200
Enormously bright centers of distant, young galaxies.
What is a quasar?
300
A group of two or more stars that are held together by gravity.
What is a star system?
300
Temporary groupings of bright, young stars.
What is an association?
300
Astronomers classify galaxies into four main types.
What are spiral, barred-spiral, elliptical, & irregular galaxies?
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