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A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel patter
Elliptical Galaxy
Absolute brightness
Constellation
Refracting telescope
HR diagram
Globular Clusters
Nebula
Spiral Galaxy
A large, round, densely-packed grouping of older stars
Elliptical Galaxy
Absolute brightness
Constellation
Refracting telescope
HR diagram
Globular Clusters
Nebula
Spiral Galaxy
A galaxy shaped like a round or flattened ball, generally ball, generally containing only old stars
Elliptical Galaxy
Absolute brightness
Constellation
Refracting telescope
HR diagram
Globular Clusters
Nebula
Spiral Galaxy
The brightness of a star if it were at a standard distance from Earth
Elliptical Galaxy
Absolute brightness
Constellation
Refracting telescope
HR diagram
Globular Clusters
Nebula
Spiral Galaxy
A large cloud of gas and dust in space, spread out in an immense volume
Elliptical Galaxy
Absolute brightness
Constellation
Refracting telescope
HR diagram
Globular Clusters
Nebula
Spiral Galaxy
A telescope that uses convex lenses to gather and focus light
Elliptical Galaxy
Absolute brightness
Constellation
Refracting telescope
HR diagram
Globular Clusters
Nebula
Spiral Galaxy
A graph relating the surface temperatures and absolute brightness of stars.
Elliptical Galaxy
Absolute brightness
Constellation
Refracting telescope
HR diagram
Globular Clusters
Nebula
Spiral Galaxy
An imaginary pattern of stars in the sky
Elliptical Galaxy
Absolute brightness
Constellation
Refracting telescope
HR diagram
Globular Clusters
Nebula
Spiral Galaxy
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